{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcd089578143cee0bdfe09fc118c7503206e69381141ec2f2d7930e86b7741791",
    "signature": "0x08af73e218e9365153f6fd93f722e3ab97a5044ea3be6f22f5a9cc9972b2d0890fff8ed562cc525dab0a090f566a6a30f16726a8163dae9694992ce22ea57da01c",
    "signer": "0xa550fDFd14255Ffc54bd99d354CCE2DF00461Dfa",
    "userId": "647687608"
  }
}