{
  "manageEntity": {
    "action": "Save",
    "entityId": "2054270714",
    "entityType": "Track",
    "nonce": "0xb2a6d65a7ff5a5abe4509ba0a089e32f289d9eb33864b7f59ca61e6f1bbd705c",
    "signature": "0xdeedc59cda03bef7b2643a8a3399e859e5ac6884f7a6a978dfcb87e6696ae61d2ace075c724207b0b43056b0ea5c9d499ef1dbedfb4ce83a7e2a687e41bd1be91c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}