{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13819",
    "entityType": "User",
    "nonce": "0x021103b6905d64cf5ca7ca27cfe9d4cc2c89105483bc99effd44d5030a161e93",
    "signature": "0xeed79b6c97a366dbc8c7963efd928a52477ee56cd93800b98dc172347bdbb59f16b1eed9a833f87bfe2814fa0cae95025f70d6daaf211baf8151788110a077c01c",
    "signer": "0xbAddc7a59cC8A05c8c6b0Dc8B3621B082f8C98bd",
    "userId": "562834680"
  }
}