diff --git a/libs/common/spec/services/stateMigration.service.spec.ts b/libs/common/spec/services/stateMigration.service.spec.ts
index e306e64e29..b0188abacc 100644
--- a/libs/common/spec/services/stateMigration.service.spec.ts
+++ b/libs/common/spec/services/stateMigration.service.spec.ts
@@ -116,8 +116,8 @@ describe("State Migration Service", () => {
                 key: "orgThreeEncKey",
               },
             },
-          },
-        },
+          } as any,
+        } as any,
       });
 
       const migratedAccount = await (stateMigrationService as any).migrateAccountFrom4To5(
diff --git a/libs/common/src/models/domain/account-profile.spec.ts b/libs/common/src/models/domain/account-profile.spec.ts
new file mode 100644
index 0000000000..7c6deda34e
--- /dev/null
+++ b/libs/common/src/models/domain/account-profile.spec.ts
@@ -0,0 +1,9 @@
+import { AccountProfile } from "./account";
+
+describe("AccountProfile", () => {
+  describe("fromJSON", () => {
+    it("should deserialize to an instance of itself", () => {
+      expect(AccountProfile.fromJSON({})).toBeInstanceOf(AccountProfile);
+    });
+  });
+});
diff --git a/libs/common/src/models/domain/account-settings.spec.ts b/libs/common/src/models/domain/account-settings.spec.ts
new file mode 100644
index 0000000000..e1a4913630
--- /dev/null
+++ b/libs/common/src/models/domain/account-settings.spec.ts
@@ -0,0 +1,25 @@
+import { AccountSettings, EncryptionPair } from "./account";
+import { EncString } from "./encString";
+
+describe("AccountSettings", () => {
+  describe("fromJSON", () => {
+    it("should deserialize to an instance of itself", () => {
+      expect(AccountSettings.fromJSON(JSON.parse("{}"))).toBeInstanceOf(AccountSettings);
+    });
+
+    it("should deserialize pinProtected", () => {
+      const accountSettings = new AccountSettings();
+      accountSettings.pinProtected = EncryptionPair.fromJSON<string, EncString>({
+        encrypted: "encrypted",
+        decrypted: "3.data",
+        decryptedSerialized: null,
+      });
+      const jsonObj = JSON.parse(JSON.stringify(accountSettings));
+      const actual = AccountSettings.fromJSON(jsonObj);
+
+      expect(actual.pinProtected).toBeInstanceOf(EncryptionPair);
+      expect(actual.pinProtected.encrypted).toEqual("encrypted");
+      expect(actual.pinProtected.decrypted.encryptedString).toEqual("3.data");
+    });
+  });
+});
diff --git a/libs/common/src/models/domain/account-tokens.spec.ts b/libs/common/src/models/domain/account-tokens.spec.ts
new file mode 100644
index 0000000000..733b3908e9
--- /dev/null
+++ b/libs/common/src/models/domain/account-tokens.spec.ts
@@ -0,0 +1,9 @@
+import { AccountTokens } from "./account";
+
+describe("AccountTokens", () => {
+  describe("fromJSON", () => {
+    it("should deserialize to an instance of itself", () => {
+      expect(AccountTokens.fromJSON({})).toBeInstanceOf(AccountTokens);
+    });
+  });
+});
diff --git a/libs/common/src/models/domain/account.spec.ts b/libs/common/src/models/domain/account.spec.ts
new file mode 100644
index 0000000000..0c76c16cc2
--- /dev/null
+++ b/libs/common/src/models/domain/account.spec.ts
@@ -0,0 +1,23 @@
+import { Account, AccountKeys, AccountProfile, AccountSettings, AccountTokens } from "./account";
+
+describe("Account", () => {
+  describe("fromJSON", () => {
+    it("should deserialize to an instance of itself", () => {
+      expect(Account.fromJSON({})).toBeInstanceOf(Account);
+    });
+
+    it("should call all the sub-fromJSONs", () => {
+      const keysSpy = jest.spyOn(AccountKeys, "fromJSON");
+      const profileSpy = jest.spyOn(AccountProfile, "fromJSON");
+      const settingsSpy = jest.spyOn(AccountSettings, "fromJSON");
+      const tokensSpy = jest.spyOn(AccountTokens, "fromJSON");
+
+      Account.fromJSON({});
+
+      expect(keysSpy).toHaveBeenCalled();
+      expect(profileSpy).toHaveBeenCalled();
+      expect(settingsSpy).toHaveBeenCalled();
+      expect(tokensSpy).toHaveBeenCalled();
+    });
+  });
+});
diff --git a/libs/common/src/models/domain/account.ts b/libs/common/src/models/domain/account.ts
index dfeacce120..3016111d04 100644
--- a/libs/common/src/models/domain/account.ts
+++ b/libs/common/src/models/domain/account.ts
@@ -1,3 +1,7 @@
+import { Jsonify } from "type-fest";
+
+import { Utils } from "@bitwarden/common/misc/utils";
+
 import { AuthenticationStatus } from "../../enums/authenticationStatus";
 import { KdfType } from "../../enums/kdfType";
 import { UriMatchType } from "../../enums/uriMatchType";
@@ -23,7 +27,39 @@ import { SymmetricCryptoKey } from "./symmetricCryptoKey";
 export class EncryptionPair<TEncrypted, TDecrypted> {
   encrypted?: TEncrypted;
   decrypted?: TDecrypted;
-  decryptedSerialized?: string;
+  private decryptedSerialized?: string;
+
+  toJSON() {
+    return {
+      encrypted: this.encrypted,
+      decrypted: this.decrypted,
+      decryptedSerialized:
+        this.decrypted instanceof ArrayBuffer ? Utils.fromBufferToByteString(this.decrypted) : null,
+    };
+  }
+
+  static fromJSON<TEncrypted, TDecrypted>(
+    obj: Jsonify<EncryptionPair<Jsonify<TEncrypted>, Jsonify<TDecrypted>>>,
+    decryptedFromJson?: (obj: Jsonify<TDecrypted>) => TDecrypted,
+    encryptedFromJson?: (obj: Jsonify<TEncrypted>) => TEncrypted
+  ) {
+    const pair = new EncryptionPair<TEncrypted, TDecrypted>();
+    if (obj?.encrypted) {
+      pair.encrypted = encryptedFromJson
+        ? encryptedFromJson(obj.encrypted as any)
+        : (obj.encrypted as TEncrypted);
+    }
+    if (obj?.decryptedSerialized) {
+      pair.decryptedSerialized = obj.decryptedSerialized;
+      // We only populate the decryptedSerialized if the decrypted is an arraybuffer.
+      pair.decrypted = Utils.fromByteStringToArray(obj.decryptedSerialized)?.buffer as any;
+    } else if (obj?.decrypted) {
+      pair.decrypted = decryptedFromJson
+        ? decryptedFromJson(obj.decrypted as any)
+        : (obj.decrypted as TDecrypted);
+    }
+    return pair;
+  }
 }
 
 export class DataEncryptionPair<TEncrypted, TDecrypted> {
@@ -83,8 +119,50 @@ export class AccountKeys {
   >();
   privateKey?: EncryptionPair<string, ArrayBuffer> = new EncryptionPair<string, ArrayBuffer>();
   publicKey?: ArrayBuffer;
-  publicKeySerialized?: string;
+  private publicKeySerialized?: string;
   apiKeyClientSecret?: string;
+
+  toJSON() {
+    this.publicKeySerialized = Utils.fromBufferToByteString(this.publicKey);
+    return this;
+  }
+
+  static fromJSON(obj: any): AccountKeys {
+    return Object.assign(
+      new AccountKeys(),
+      { cryptoMasterKey: SymmetricCryptoKey.fromJSON(obj?.cryptoMasterKey) },
+      {
+        cryptoSymmetricKey: EncryptionPair.fromJSON(
+          obj?.cryptoSymmetricKey,
+          SymmetricCryptoKey.fromJSON
+        ),
+      },
+      {
+        organizationKeys: EncryptionPair.fromJSON(obj?.organizationKeys, (obj: any) => {
+          const map = new Map<string, SymmetricCryptoKey>();
+          for (const orgId in obj) {
+            map.set(orgId, SymmetricCryptoKey.fromJSON(obj[orgId]));
+          }
+          return map;
+        }),
+      },
+      {
+        providerKeys: EncryptionPair.fromJSON(obj?.providerKeys, (obj: any) => {
+          const map = new Map<string, SymmetricCryptoKey>();
+          for (const providerId in obj) {
+            map.set(providerId, SymmetricCryptoKey.fromJSON(obj[providerId]));
+          }
+          return map;
+        }),
+      },
+      {
+        privateKey: EncryptionPair.fromJSON(obj?.privateKey),
+      },
+      {
+        publicKey: Utils.fromByteStringToArray(obj?.publicKeySerialized)?.buffer,
+      }
+    );
+  }
 }
 
 export class AccountProfile {
@@ -105,6 +183,10 @@ export class AccountProfile {
   keyHash?: string;
   kdfIterations?: number;
   kdfType?: KdfType;
+
+  static fromJSON(obj: Jsonify<AccountProfile>): AccountProfile {
+    return Object.assign(new AccountProfile(), obj);
+  }
 }
 
 export class AccountSettings {
@@ -140,6 +222,15 @@ export class AccountSettings {
   settings?: AccountSettingsSettings; // TODO: Merge whatever is going on here into the AccountSettings model properly
   vaultTimeout?: number;
   vaultTimeoutAction?: string = "lock";
+
+  static fromJSON(obj: Jsonify<AccountSettings>): AccountSettings {
+    return Object.assign(new AccountSettings(), obj, {
+      pinProtected: EncryptionPair.fromJSON<string, EncString>(
+        obj?.pinProtected,
+        EncString.fromJSON
+      ),
+    });
+  }
 }
 
 export type AccountSettingsSettings = {
@@ -151,6 +242,10 @@ export class AccountTokens {
   decodedToken?: any;
   refreshToken?: string;
   securityStamp?: string;
+
+  static fromJSON(obj: Jsonify<AccountTokens>): AccountTokens {
+    return Object.assign(new AccountTokens(), obj);
+  }
 }
 
 export class Account {
@@ -184,4 +279,13 @@ export class Account {
       },
     });
   }
+
+  static fromJSON(json: any): Account {
+    return Object.assign(new Account({}), json, {
+      keys: AccountKeys.fromJSON(json?.keys as any),
+      profile: AccountProfile.fromJSON(json?.profile),
+      settings: AccountSettings.fromJSON(json?.settings as any),
+      tokens: AccountTokens.fromJSON(json?.tokens as any),
+    });
+  }
 }
diff --git a/libs/common/src/models/domain/acount-keys.spec.ts b/libs/common/src/models/domain/acount-keys.spec.ts
new file mode 100644
index 0000000000..e05065e344
--- /dev/null
+++ b/libs/common/src/models/domain/acount-keys.spec.ts
@@ -0,0 +1,68 @@
+import { Utils } from "@bitwarden/common/misc/utils";
+
+import { makeStaticByteArray } from "../../../spec/utils";
+
+import { AccountKeys, EncryptionPair } from "./account";
+import { SymmetricCryptoKey } from "./symmetricCryptoKey";
+
+describe("AccountKeys", () => {
+  describe("toJSON", () => {
+    it("should serialize itself", () => {
+      const keys = new AccountKeys();
+      const buffer = makeStaticByteArray(64).buffer;
+      const symmetricKey = new SymmetricCryptoKey(buffer);
+      keys.cryptoMasterKey = symmetricKey;
+      keys.publicKey = buffer;
+      keys.cryptoSymmetricKey = new EncryptionPair<string, SymmetricCryptoKey>();
+      keys.cryptoSymmetricKey.decrypted = symmetricKey;
+
+      const symmetricKeySpy = jest.spyOn(symmetricKey, "toJSON");
+      const actual = JSON.stringify(keys.toJSON());
+      expect(symmetricKeySpy).toHaveBeenCalled();
+      expect(actual).toContain(`"cryptoMasterKey":${JSON.stringify(symmetricKey.toJSON())}`);
+      expect(actual).toContain(
+        `"publicKeySerialized":${JSON.stringify(Utils.fromBufferToByteString(buffer))}`
+      );
+    });
+
+    it("should serialize public key as a string", () => {
+      const keys = new AccountKeys();
+      keys.publicKey = Utils.fromByteStringToArray("hello").buffer;
+      const json = JSON.stringify(keys);
+      expect(json).toContain('"publicKeySerialized":"hello"');
+    });
+  });
+
+  describe("fromJSON", () => {
+    it("should deserialize public key to a buffer", () => {
+      const keys = AccountKeys.fromJSON({
+        publicKeySerialized: "hello",
+      });
+      expect(keys.publicKey).toEqual(Utils.fromByteStringToArray("hello").buffer);
+    });
+
+    it("should deserialize cryptoMasterKey", () => {
+      const spy = jest.spyOn(SymmetricCryptoKey, "fromJSON");
+      AccountKeys.fromJSON({});
+      expect(spy).toHaveBeenCalled();
+    });
+
+    it("should deserialize organizationKeys", () => {
+      const spy = jest.spyOn(SymmetricCryptoKey, "fromJSON");
+      AccountKeys.fromJSON({ organizationKeys: [{ orgId: "keyJSON" }] });
+      expect(spy).toHaveBeenCalled();
+    });
+
+    it("should deserialize providerKeys", () => {
+      const spy = jest.spyOn(SymmetricCryptoKey, "fromJSON");
+      AccountKeys.fromJSON({ providerKeys: [{ providerId: "keyJSON" }] });
+      expect(spy).toHaveBeenCalled();
+    });
+
+    it("should deserialize privateKey", () => {
+      const spy = jest.spyOn(EncryptionPair, "fromJSON");
+      AccountKeys.fromJSON({ privateKey: { encrypted: "encrypted", decrypted: "decrypted" } });
+      expect(spy).toHaveBeenCalled();
+    });
+  });
+});
diff --git a/libs/common/src/models/domain/encryption-pair.spec.ts b/libs/common/src/models/domain/encryption-pair.spec.ts
new file mode 100644
index 0000000000..706a3406ba
--- /dev/null
+++ b/libs/common/src/models/domain/encryption-pair.spec.ts
@@ -0,0 +1,44 @@
+import { Utils } from "@bitwarden/common/misc/utils";
+
+import { EncryptionPair } from "./account";
+
+describe("EncryptionPair", () => {
+  describe("toJSON", () => {
+    it("should populate decryptedSerialized for buffer arrays", () => {
+      const pair = new EncryptionPair<string, ArrayBuffer>();
+      pair.decrypted = Utils.fromByteStringToArray("hello").buffer;
+      const json = pair.toJSON();
+      expect(json.decryptedSerialized).toEqual("hello");
+    });
+
+    it("should serialize encrypted and decrypted", () => {
+      const pair = new EncryptionPair<string, string>();
+      pair.encrypted = "hello";
+      pair.decrypted = "world";
+      const json = pair.toJSON();
+      expect(json.encrypted).toEqual("hello");
+      expect(json.decrypted).toEqual("world");
+    });
+  });
+
+  describe("fromJSON", () => {
+    it("should deserialize encrypted and decrypted", () => {
+      const pair = EncryptionPair.fromJSON({
+        encrypted: "hello",
+        decrypted: "world",
+        decryptedSerialized: null,
+      });
+      expect(pair.encrypted).toEqual("hello");
+      expect(pair.decrypted).toEqual("world");
+    });
+
+    it("should deserialize decryptedSerialized for buffer arrays", () => {
+      const pair = EncryptionPair.fromJSON<string, ArrayBuffer>({
+        encrypted: "encrypted",
+        decrypted: null,
+        decryptedSerialized: "hello",
+      });
+      expect(pair.decrypted).toEqual(Utils.fromByteStringToArray("hello").buffer);
+    });
+  });
+});
diff --git a/libs/common/src/models/domain/state.spec.ts b/libs/common/src/models/domain/state.spec.ts
new file mode 100644
index 0000000000..64e71d7cb2
--- /dev/null
+++ b/libs/common/src/models/domain/state.spec.ts
@@ -0,0 +1,28 @@
+import { Account } from "./account";
+import { State } from "./state";
+
+describe("state", () => {
+  describe("fromJSON", () => {
+    it("should deserialize to an instance of itself", () => {
+      expect(State.fromJSON({})).toBeInstanceOf(State);
+    });
+
+    it("should always assign an object to accounts", () => {
+      const state = State.fromJSON({});
+      expect(state.accounts).not.toBeNull();
+      expect(state.accounts).toEqual({});
+    });
+
+    it("should build an account map", () => {
+      const accountsSpy = jest.spyOn(Account, "fromJSON");
+      const state = State.fromJSON({
+        accounts: {
+          userId: {},
+        },
+      });
+
+      expect(state.accounts["userId"]).toBeInstanceOf(Account);
+      expect(accountsSpy).toHaveBeenCalled();
+    });
+  });
+});
diff --git a/libs/common/src/models/domain/state.ts b/libs/common/src/models/domain/state.ts
index f5a2c046b5..e5f18bb814 100644
--- a/libs/common/src/models/domain/state.ts
+++ b/libs/common/src/models/domain/state.ts
@@ -1,3 +1,5 @@
+import { Jsonify } from "type-fest";
+
 import { Account } from "./account";
 import { GlobalState } from "./globalState";
 
@@ -14,4 +16,26 @@ export class State<
   constructor(globals: TGlobalState) {
     this.globals = globals;
   }
+
+  // TODO, make Jsonify<State,TGlobalState,TAccount> work. It currently doesn't because Globals doesn't implement Jsonify.
+  static fromJSON<TGlobalState extends GlobalState, TAccount extends Account>(
+    obj: any
+  ): State<TGlobalState, TAccount> {
+    return Object.assign(new State(null), obj, {
+      accounts: State.buildAccountMapFromJSON(obj?.accounts),
+    });
+  }
+
+  private static buildAccountMapFromJSON(
+    jsonAccounts: Jsonify<{ [userId: string]: Jsonify<Account> }>
+  ) {
+    if (!jsonAccounts) {
+      return {};
+    }
+    const accounts: { [userId: string]: Account } = {};
+    for (const userId in jsonAccounts) {
+      accounts[userId] = Account.fromJSON(jsonAccounts[userId]);
+    }
+    return accounts;
+  }
 }
diff --git a/libs/common/src/services/state.service.ts b/libs/common/src/services/state.service.ts
index f2c5a5618d..da572b6c25 100644
--- a/libs/common/src/services/state.service.ts
+++ b/libs/common/src/services/state.service.ts
@@ -10,7 +10,6 @@ import { StorageLocation } from "../enums/storageLocation";
 import { ThemeType } from "../enums/themeType";
 import { UriMatchType } from "../enums/uriMatchType";
 import { StateFactory } from "../factories/stateFactory";
-import { Utils } from "../misc/utils";
 import { CipherData } from "../models/data/cipherData";
 import { CollectionData } from "../models/data/collectionData";
 import { EncryptedOrganizationKeyData } from "../models/data/encryptedOrganizationKeyData";
@@ -148,6 +147,9 @@ export class StateService<
       return;
     }
     await this.updateState(async (state) => {
+      if (state.accounts == null) {
+        state.accounts = {};
+      }
       state.accounts[userId] = this.createAccount();
       const diskAccount = await this.getAccountFromDisk({ userId: userId });
       state.accounts[userId].profile = diskAccount.profile;
@@ -494,9 +496,10 @@ export class StateService<
 
   @withPrototype(SymmetricCryptoKey, SymmetricCryptoKey.fromJSON)
   async getCryptoMasterKey(options?: StorageOptions): Promise<SymmetricCryptoKey> {
-    return (
-      await this.getAccount(this.reconcileOptions(options, await this.defaultInMemoryOptions()))
-    )?.keys?.cryptoMasterKey;
+    const account = await this.getAccount(
+      this.reconcileOptions(options, await this.defaultInMemoryOptions())
+    );
+    return account?.keys?.cryptoMasterKey;
   }
 
   async setCryptoMasterKey(value: SymmetricCryptoKey, options?: StorageOptions): Promise<void> {
@@ -657,9 +660,10 @@ export class StateService<
 
   @withPrototype(SymmetricCryptoKey, SymmetricCryptoKey.fromJSON)
   async getDecryptedCryptoSymmetricKey(options?: StorageOptions): Promise<SymmetricCryptoKey> {
-    return (
-      await this.getAccount(this.reconcileOptions(options, await this.defaultInMemoryOptions()))
-    )?.keys?.cryptoSymmetricKey?.decrypted;
+    const account = await this.getAccount(
+      this.reconcileOptions(options, await this.defaultInMemoryOptions())
+    );
+    return account?.keys?.cryptoSymmetricKey?.decrypted;
   }
 
   async setDecryptedCryptoSymmetricKey(
@@ -760,14 +764,9 @@ export class StateService<
   }
 
   async getDecryptedPrivateKey(options?: StorageOptions): Promise<ArrayBuffer> {
-    const privateKey = (
+    return (
       await this.getAccount(this.reconcileOptions(options, await this.defaultInMemoryOptions()))
-    )?.keys?.privateKey;
-    let result = privateKey?.decrypted;
-    if (result == null && privateKey?.decryptedSerialized != null) {
-      result = Utils.fromByteStringToArray(privateKey.decryptedSerialized);
-    }
-    return result;
+    )?.keys?.privateKey.decrypted;
   }
 
   async setDecryptedPrivateKey(value: ArrayBuffer, options?: StorageOptions): Promise<void> {
@@ -775,8 +774,6 @@ export class StateService<
       this.reconcileOptions(options, await this.defaultInMemoryOptions())
     );
     account.keys.privateKey.decrypted = value;
-    account.keys.privateKey.decryptedSerialized =
-      value == null ? null : Utils.fromBufferToByteString(value);
     await this.saveAccount(
       account,
       this.reconcileOptions(options, await this.defaultInMemoryOptions())
@@ -2015,11 +2012,7 @@ export class StateService<
     const keys = (
       await this.getAccount(this.reconcileOptions(options, await this.defaultInMemoryOptions()))
     )?.keys;
-    let result = keys?.publicKey;
-    if (result == null && keys?.publicKeySerialized != null) {
-      result = Utils.fromByteStringToArray(keys.publicKeySerialized);
-    }
-    return result;
+    return keys?.publicKey;
   }
 
   async setPublicKey(value: ArrayBuffer, options?: StorageOptions): Promise<void> {
@@ -2027,7 +2020,6 @@ export class StateService<
       this.reconcileOptions(options, await this.defaultInMemoryOptions())
     );
     account.keys.publicKey = value;
-    account.keys.publicKeySerialized = value == null ? null : Utils.fromBufferToByteString(value);
     await this.saveAccount(
       account,
       this.reconcileOptions(options, await this.defaultInMemoryOptions())
@@ -2718,8 +2710,11 @@ export class StateService<
       : await this.secureStorageService.save(`${options.userId}${key}`, value, options);
   }
 
-  protected state(): Promise<State<TGlobalState, TAccount>> {
-    return this.memoryStorageService.get<State<TGlobalState, TAccount>>(keys.state);
+  protected async state(): Promise<State<TGlobalState, TAccount>> {
+    const stateJson = await this.memoryStorageService.get<State<TGlobalState, TAccount>>(
+      keys.state
+    );
+    return State.fromJSON(stateJson);
   }
 
   private async setState(state: State<TGlobalState, TAccount>): Promise<void> {
diff --git a/libs/common/src/services/stateMigration.service.ts b/libs/common/src/services/stateMigration.service.ts
index 359b4acec4..e936860657 100644
--- a/libs/common/src/services/stateMigration.service.ts
+++ b/libs/common/src/services/stateMigration.service.ts
@@ -12,7 +12,13 @@ import { OrganizationData } from "../models/data/organizationData";
 import { PolicyData } from "../models/data/policyData";
 import { ProviderData } from "../models/data/providerData";
 import { SendData } from "../models/data/sendData";
-import { Account, AccountSettings, AccountSettingsSettings } from "../models/domain/account";
+import {
+  Account,
+  AccountSettings,
+  AccountSettingsSettings,
+  EncryptionPair,
+} from "../models/domain/account";
+import { EncString } from "../models/domain/encString";
 import { EnvironmentUrls } from "../models/domain/environmentUrls";
 import { GeneratedPasswordHistory } from "../models/domain/generatedPasswordHistory";
 import { GlobalState } from "../models/domain/globalState";
@@ -314,10 +320,10 @@ export class StateMigrationService<
       passwordGenerationOptions:
         (await this.get<any>(v1Keys.passwordGenerationOptions)) ??
         defaultAccount.settings.passwordGenerationOptions,
-      pinProtected: {
+      pinProtected: Object.assign(new EncryptionPair<string, EncString>(), {
         decrypted: null,
         encrypted: await this.get<string>(v1Keys.pinProtected),
-      },
+      }),
       protectedPin: await this.get<string>(v1Keys.protectedPin),
       settings:
         userId == null