{
  "manageEntity": {
    "action": "Save",
    "entityId": "837088759",
    "entityType": "Track",
    "nonce": "0xdabc11f37fe40d0cec2cf0882a624f73a5ca6533d0660a56ed8d9361a11e9003",
    "signature": "0x5a7adeeeda832f878662d67a881b0f7397e5bed4fb872a35f347f4a12605c6cb135a07bd95466ecaaf7b26d1402ae01aaa8688086e5b874082da52bd9501317f1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}