{
  "manageEntity": {
    "action": "Save",
    "entityId": "13994492",
    "entityType": "Track",
    "nonce": "0x4c5b967e7bad27e6d9e4e69a4a63ee7093b038b06e17f6aedb6aad50d1510a0e",
    "signature": "0x008a3165c61ce77ab57ee178b19c7e3ba7eabdb9d74ea8a7ca81e805c25baddb6fde5075771f69b5d030f95bba189f793666465d13b0d0c1e3f478a363c900ae1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}