{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x5b785f416a54600f118a42bdf8119784016ce7478aff76cbae87d0da19955287",
    "signature": "0x6ed0643c258250b8f96664408ca60953af669316f548bcbd1f778e32d9c1255950e4d0a55eaf456cf577ae9ab5c87b7023f1c2a6174ab5638c5d21cd241b3d7d1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}