{
  "manageEntity": {
    "action": "Save",
    "entityId": "829186110",
    "entityType": "Track",
    "nonce": "0x879833c77456a6ae0ff76d4a220be0fa85aa88a11b36bf46127fa2b3639000ba",
    "signature": "0x84f7e1563b8fe124be9a6818282f11ce43f03c7343240bd4d534ba056a94b3833b68052b1a26e33c8519c1f08e2de2dbe0a1286b0de87b29cd05a5ed883440bc1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}