{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xe8e94d3376f4ee1a40461055e90c7afd81722c71e23fddc2775615d32efe38c6",
    "signature": "0xb476400449c93f8fb3f9a1842bc4cbc9eb49d9f90e0e58b880217244dfc0460c5b8e1b096dd60749d5a67481e35bb5f8e9d27d9d967eac07f8dff6be814174da1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}