{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088553692",
    "entityType": "Track",
    "nonce": "0xc33aa000d632d24bc39b6dd3308361c9415a6360593c3814be3f20e4129177f5",
    "signature": "0x4df3f79a542fa798102fdcbacbaed73e7d89dd14091f8d19d91fea1bc82458cd38b3ca6462f2a12c728a24ac375e57f20b2c0136326dc3759ad4dfbe36704c901b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}