{
  "manageEntity": {
    "action": "Save",
    "entityId": "204612033",
    "entityType": "Track",
    "nonce": "0x954141b5b5b833e7e0a41904be3de83e31f3ddddb8f7dd9f8b4bd31fb1f11901",
    "signature": "0x79df8c0ca7613de030e894b4b692915326c9184190dbf1c7cf5cf4ddab42bcd8008da433eac97cfefac5e1002d9de1f4e1476033f3fbf622a875914f6591ccd71c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}