{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdf6a063a826328bab62045ce51f82dfc1757f2e22fb5051065fc4026e4cd1a15",
    "signature": "0x15c145091f9e552310478df32733eafdc8eaf7661ce2256ccbee42adebfb392612287f3cbc6aa08c0df58c2e755c9fb7f5655d70a53c85a2341e82d5616206be1b",
    "signer": "0xd52755aE67F1405b71b8e9514ec9cbB5C2098F87",
    "userId": "758707622"
  }
}