{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4165ad2e3fedb99dd74de3f229a3ae19503a958e0ec523d057b6875015ec90ef",
    "signature": "0x85676d0ae0a536dc4f76b5027dafd5521dcd706a747f4e006d39d50f374bc31f3e09efc3fad05d4ba031154ee27c185be0ec792250e98dbfaa2bd36a72e8da011c",
    "signer": "0xE703Ef9a8348786D9579AA2C679a0d7154727E4a",
    "userId": "373502312"
  }
}