{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334323",
    "entityType": "User",
    "nonce": "0xbfad6ea5384262483f6bc4d070a6604cf5f56743c7485456e960cd6b028a110b",
    "signature": "0x19c0549eb6348289032e8478267699066233c854eca590c503bf455c2ce06be84a7c93bee616feb5a1484aa712b84458b8315cdd5a7b06312d572064351f9ee91c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}