{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x31e7f89dd50d8815737daebfd380c11d2a3d4390e338b9d511d146b8b3e954fd",
    "signature": "0x47759ff5b08360a06be9ccb3ae0cde0051f7d50b7cbc07449b8179b49546d8513ca6243097e3fc43c406700381e8fff362750a11d239ed0f1381e92bf037fc461b",
    "signer": "0x936222d539A82b8FfA7faBBeAC7b9d5952BA7737",
    "userId": "3790984"
  }
}