{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57937",
    "entityType": "User",
    "nonce": "0xd761753176b7c1bb378dfd6aa344798323186086a2cc9f1ced5be728019464ce",
    "signature": "0x550f8400cb5ecf2db7adb06e32dfc66b313cc27771d28c234899728be298b2c951ae8beef54067a354f2fd65f8cb5d1bfd8ab31db1da689e2629eda19fb3a2021c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}