{
  "manageEntity": {
    "action": "Save",
    "entityId": "108911862",
    "entityType": "Track",
    "nonce": "0xd2ccd94684b12f930f8ab56fd775a2f61b15330789162f9f1ff5ac6c01e2fccd",
    "signature": "0xded864ae975b75b99046ffb42d183b2eabc74ed23ed202c6c865b070904d3352021f25e79f730f537545edfd826ca9eac854b8bd48d6f35e46f2f0b2d485b8021c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}