{
  "manageEntity": {
    "action": "Save",
    "entityId": "1293219315",
    "entityType": "Track",
    "nonce": "0xb093e96646da09747a072c9e14e6b3378d3b4a7f7919a34f21cc20c1bedf0883",
    "signature": "0x3ce8d71cab11c809f9ca2331823db0d329b975a2d070025fc3f2e89829ac010b01707a208772e1ee0ef9f85352605095811db8d502e260f14ea8b8570b7c317b1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}