{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "823613833",
    "entityType": "User",
    "nonce": "0xdc9369f31b33403c0404b000b93fef3236878a8194755dd6808636afef361525",
    "signature": "0x7d2e001487ba6c213a2be4eb8b796101afafe30740db3b1b1922d4d7f6aa19860364b6f2f40b09c778e88ab818a339524e009080406c28184104f4809999950d1c",
    "signer": "0x463e9d20cE48dd061f8FB6F87c288aF77bc8343A",
    "userId": "570612456"
  }
}