{
  "manageEntity": {
    "action": "Save",
    "entityId": "571558266",
    "entityType": "Track",
    "nonce": "0xe08fc54d950d57911704f99f64cbaa65a8a06f2ef9c935cd3a907f435ae8ea07",
    "signature": "0x57698f1ac4a0168f62a68b5912ef4996129cb93a73d99db8a42f264af261ff9b4313fff8ea10b6438c585d353618e46977b679cafd651fdcdc29dd527a72cf171c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}