{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "310550764",
    "entityType": "User",
    "nonce": "0x7359cf31e28389799054f55cbad1720b487a9515352b45ddc94b526f7d5ae28c",
    "signature": "0x7da3599eca15733ceaf4e1e825d728b23df15dfb982fecd23019b555160162fd2fb65dfc48465c84021493a2cc8d02d5945a8a54d27e424425049d669372fe381c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}