{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xeee1a6cb61873c257c09f1c6e3044e0b1c771221673bcaa05f655b39d8740e3e",
    "signature": "0xa313dfb17dbd1f6a930596a14688f3fefdb3969343647fb64ae3d7b595306847601704bfb0c06c5d5c32e84df8fe7fffdc529bb7c6841fc61a5fb6f6465d6fa41b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}