{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xd80775273c5e5e97f5d4e33360f45656e49c306f2847a8f3e14eacaf0bff0ea1",
    "signature": "0x2350793c084349effb19ca98c575e0cac82f7ce6eefdbb3c4f0126f23d70993a2f915c8175a8150337af483122a93753e1418f4ecdc5f5179264add54816a3361c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}