{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x3fc39c7849e19429bf87ba85715ee36d33f84f0a1cfeb4891ef318f0a53a0785",
    "signature": "0x553a3f57c381785fb06d96218ed43c96aae9994fb021314998d00c79eabe43050dd5d2581ad54332252cd1fe3d2b3ded2f675cc56d9bd87d31342ed17a9ce22b1c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}