{
  "manageEntity": {
    "action": "Save",
    "entityId": "1717183704",
    "entityType": "Track",
    "nonce": "0x647e4aa2a339e3510ca3a4885234125680f0dabf8d5c198ff12107f0b8a79b2d",
    "signature": "0x6e3d66affaf97a2e01176de40caa1666c171670ec92029478415330de6231c6c662f85f807171152b55d804008a361111379947e7066994a46f3aa4c635723f21b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}