{
  "manageEntity": {
    "action": "Save",
    "entityId": "683711",
    "entityType": "Track",
    "nonce": "0x10a3c0a94936ba88a952d6ee6dd1768f609b981d19b09a27e069f3d1c4983fdf",
    "signature": "0x0eebba1d6a8808464fe47a212d422b3b7af0a9644a43ab22aa9720625537dced0d4d1ef3b98e32ba8676a186cd5a6e6a17eb43da05fc5f8f8fc91920c403a3ba1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}