{
  "manageEntity": {
    "action": "Save",
    "entityId": "764594",
    "entityType": "Track",
    "nonce": "0x070a53d17a7dcb2f844dbf9a87fcba17604440cc8451473c5b792b43bc44291f",
    "signature": "0x1ba258b84c167446d5dbeb4d15f8caa2c6900a61f0edbd84698ddefea17166dc34eb61b096696dd2297f522c0584e2c58788ef0ff3dab294a79cf7b56250f1141b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}