{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0xc78e4ca24677f08530ad3ceb84b184349bc84755aede99705f14ea77e8e1d861",
    "signature": "0x1646b958b0ce541a8ce99a3f72f02ad2171c08ddd7b4cbb8b59ee188c8dfbda82b8ea3b00e19d2fbf0c178a7002835568078c74a3a1b3cf72eb0bc449e9ae3111c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}