{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "632918751",
    "entityType": "User",
    "nonce": "0x3f1cd40b5ea962f7767da91b545d92e65d2ecb5ccb3c51c1a4bd3caacd6c6c86",
    "signature": "0xad3449e8b0c5b68e93efbbd8a3a9778593160448b40669f6ff14ef4bf81d6a017ec8a847fe884244aa7f75b3dcc30128adb619fed8c3799e3ded0caabe8f5f661c",
    "signer": "0x1B7594799b4E189Ff1B3C4fD8289B2e8d82B000b",
    "userId": "66769284"
  }
}