{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311591173",
    "entityType": "User",
    "nonce": "0x875f429cf1fbf4d69d7621c75d05b6165ad62bd7b788794b81ee53da7187f47b",
    "signature": "0x59ed42fb3cb8d85ec45a3b14d9c11128281598e3f7c02931f2e0cbd380cf7e3b59b9e2b409f635a27558ea675b6c78eaa1edc73e8cf9a86fb0d03d02eb2688cc1c",
    "signer": "0x12EaF77464824447aA995e75Dd707B3e5246be9C",
    "userId": "409175645"
  }
}