{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xf813311c79f1c1404fe7f2752d4c97e94cda0ce95298aa918b4e9a3cca43cbf7",
    "signature": "0xd00b9e21afbf524f48f9082b25a052d0676fc7a95b7de62204a6ed835abb19896bc232de9fa7fb685b7158a29cdecf3459edf459c5e08a43a2c36937cda634601b",
    "signer": "0xcc9cCc523005B394381478381D34DddB8558A28f",
    "userId": "957873025"
  }
}