{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5642",
    "entityType": "User",
    "nonce": "0xa4ea78cfd3567373f3ec05d97e80f564efd03399b8f25029b90d19a5bdf8d996",
    "signature": "0x334b6a5bdb56c6150f89370577cc1921489ae0c2f8d3598769202a9f372af89055f2c94d0fbe325767d2b86c6e4c957ba013e1af0979324689021795949b1d8a1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}