{
  "manageEntity": {
    "action": "Save",
    "entityId": "546825847",
    "entityType": "Track",
    "nonce": "0x4daa92d6c780b1e7c1e662e7bbb06300ba0294c514baf5121cb2cad4bc189559",
    "signature": "0x2bc876898279c5587af734e51a200fd347487b5484ac6665b966d602e2c6ffae770ce7a23ddd23e3a714b85e0da14dbe411957b68573274980c093d114b7e3f61c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}