{
  "manageEntity": {
    "action": "Save",
    "entityId": "1099117",
    "entityType": "Track",
    "nonce": "0x485ae2c5220de0b46e0bf29ada6ca8e85a55e0b55fd3662fc7e8bdba00e2c5b9",
    "signature": "0x689d19366eb4c2f535fdbf209146f4a02811b5aa254b6f2d482d5c61e6d9f4956fda435e51f7a12f7cb0dc4d209e10f34156648dcebb13f793939a8f777ae90c1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}