{
  "manageEntity": {
    "action": "Save",
    "entityId": "1514271106",
    "entityType": "Track",
    "nonce": "0xba0a774585844c03a689289325ac89415006cb10191c07393aaf441799cb4944",
    "signature": "0xbb091347b6cfdd3ea1cb1cf24aa74354fe301182dbdcc4965e2095aa69ed9e616498bf6ee6cc5535cab72805f470c0d3281f02fe0d9e98c50f3a2e09f54a9c021c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}