{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x976570899d4c3f5a5920293247ab294337ddf5931922410bfcb682cd1b47e3a5",
    "signature": "0x3221858bcaf30b35ffed1f0a72e26b8277de220adb8a8e36735e6622a06e7c6f3ac64547fd02065a74b7b29fe7b785ed8d5ef064221506c6c99ba527e24eb4a21c",
    "signer": "0x797809D19dB18165a2e96DC84D1C5C51064E47C8",
    "userId": "684398198"
  }
}