{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0xcfd16daae957362f455394aaabc2073bbd064e4cd4ba3c3d09455f871765685a",
    "signature": "0xc9eb342ed8408f50d2af11c9ef13618ecd7704f6ba3c99e65e2f88540e046b6c5cad113b747b273ff20a1b4e9012a081e3b207d697e46bb740301d26fa5bbaab1c",
    "signer": "0xd2034C6636b4261c48403302a162304227a2BBFd",
    "userId": "39985301"
  }
}