{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x600a349062e2a0822a3248a04528e8ba054405af25b37e21376d37c84cba5a31",
    "signature": "0xe7d87a8441ed81cdfc2bf901df732fbcd599f3a5a2058a9db54217464d0adc715b3f68e880e6cc8a91713fbf5262cfa46f8c032e105fa2c6fa9b50cb6bcdb83c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}