{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb7caed60965ab152decff04c4d5a9864886451ef4c75c2f9e1f005e4ba40c022",
    "signature": "0x5feabf7d90a400bf7384f93188b6b7aca32b1befdf33b318e59f7c34e2d7d9e1006df33cbccb0a93777b06b2c53170fb79fa5434128dae61e5f658a612a635a81b",
    "signer": "0xC60aE132ED48aa4D3c7e539285a2180C8C778625",
    "userId": "225555021"
  }
}