{
  "manageEntity": {
    "action": "Save",
    "entityId": "1712604745",
    "entityType": "Track",
    "nonce": "0x195f99718010bcff73ae9ddbce971114c056914507d4c506113d8bc1550ff503",
    "signature": "0xb9240f64bc823ca7fb581ce4732f8d3155fa86c36e0924f98a6a626ae4aa64b8673625208922765ddeebda35cc06730f9a56c3b777ba976577abd3ca4abda6211c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}