{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "679513519",
    "entityType": "User",
    "nonce": "0x889f515b5d8ede3b7d7dc76b9f0a19b5b2abe6964fd3e87e3cc55406c818ceed",
    "signature": "0x8022b1b85675eaed8f7d0e47e098ef01c3714e714c7f8da227e727a6d40591d97bfbbe9f187800b88f3509b8d1f49f6cdbe34da0b318eeba0d510cf6c301a0df1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}