{
  "manageEntity": {
    "action": "Save",
    "entityId": "1316847636",
    "entityType": "Track",
    "nonce": "0x52cc8a6b04cf060a021d622e2d86e661e84421365f996c77bac4a2ce36e021ae",
    "signature": "0x2ab3e916f9c1037d4f3c963c57bfa68e220b4a2e41c0b176bb3fdf16cde9734c264486d2d92ea18117838601784d7a5c6debe08dc5b45e73d7ed01342dda87ff1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}