{
  "manageEntity": {
    "action": "Save",
    "entityId": "242286659",
    "entityType": "Track",
    "nonce": "0xf80babcc2181f7b329afc089e97ef5c696d04f94df706052c388e22214ac6ef1",
    "signature": "0xb8d34fbd17a3db299908267786353bcfccef42d9d9d70448a1f011c8aca6a3f96d57f4b698f1fe1ced2441f8baa2d9f142fb45f779e4377016d6c45cab1c9b7f1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}