{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "409229",
    "entityType": "User",
    "nonce": "0x52d83a6da92223e30dad4ccde4719ef16959b03a35ee70948cb72fdfa0bc58c1",
    "signature": "0x3a99c4b66fcb35a57a54cdfda95d547cc5b63b10544f767a888f851497f8cbfc430eb3018ff74e7d810aa31b9c6bdf06f9231d7377871c7049e91bdb584e76921c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}