{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xda45b28c4dc64185bee58aad0357685c4fff525b883dec4656ff7ebdcc97143f",
    "signature": "0x26cb269015fa4f37938465394efb9df93b42dffa5bac56d5993a51cb6e56c4191c3b6f69745bf5b362cf2d7e711753c47a88f9d9b8003bf6e2c130c4e2c71a041b",
    "signer": "0x6Ec53E94ea3DbC1330c36Bc99F42849a09b6a199",
    "userId": "913656581"
  }
}