{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "661101608",
    "entityType": "User",
    "nonce": "0x5c9da8cc1fd84b3704704b93fc43152c54a4e8b193aa045e18503edc3f0e65dc",
    "signature": "0x2d9b002ce464d9bea9604cd82d91f44c041849df9213755eb4156fd2b2e7fb581da6f0653b5b191e8a745cdf4bbeebaaf0946f0a2196eb7981675a3db11dd2861c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}