{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdcf8f4cd78dfca318698afb495e227fef82d2b2b29133cc621d08fd8d3a70708",
    "signature": "0xde340229f9cc089c0bd3ae8407484ed7aeb9d83ff8e64effa45d6b332e75ce201d839730b4c96990caddb24d433247f45cbb57a2cce6d8c27c5d23e85910ad1c1c",
    "signer": "0x158B90be980C86F651cC1E1E516D1AC20A382E18",
    "userId": "993218471"
  }
}