{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x7b85d0325e8bfb4396513f9329e609499437dc0ebd2a5b20f865a4689b5c4e66",
    "signature": "0x1392c80af28e1e92a4ff4f8b7891906e449d84c56eaaa2006185c4b5759fed807a58be42790814de7d95b84d4a9dd7a63e96520f1b20068e256cf574a3ae16181c",
    "signer": "0x5Bc05b706D3864d34607f61EB1cb128EEf4453b8",
    "userId": "673773101"
  }
}