{
  "manageEntity": {
    "action": "Save",
    "entityId": "447092964",
    "entityType": "Track",
    "nonce": "0xe0f2f9de18df1ce95c6c75f4a524b949504e13ac4e05c5adb771db5819285daf",
    "signature": "0x97b49eba412280cea0d886eb192f0372a53f0fd4c98c3936c0132498b031ae421bbd553e8946671f7df95b6b2ebe207e05820166aefa61dddaf871699b52597f1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}