{
  "manageEntity": {
    "action": "Save",
    "entityId": "1731043870",
    "entityType": "Track",
    "nonce": "0xf79d2eccf0da4fbe82cda458669d2f76358cd29a5f92c7841955023b0f548ec5",
    "signature": "0xf7a6aca3fd6cdcab12dbc173874c394f38ace93a573856120a82114bae38595c11d8812605ef0ca24ba60d9b9061aed29e2289462f2c65a7ddc5d6b5e89870c51c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}