{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x494b07e617c145c0a9f966fc2e7c53af5bed217da54d10f227593c3f2b58cd2e",
    "signature": "0xe740cc969960a2b6edadec465dbcf32f89bdc3017372a8a14896b233570983283827659853385ee3ecf005b6fa17e74c92b1392c953db6b1976c35f0fe86ae471c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}