{
  "manageEntity": {
    "action": "Save",
    "entityId": "820089158",
    "entityType": "Track",
    "nonce": "0x966da88aed5f4753a8fbafe1fbae099d280d1bdf955ed21d2b0392ed45f1f739",
    "signature": "0x996caae8c9a47c9cc13ffccefd0dc4c3a59b90f696fb07808c16f575ed8777167f18ff026557a20dd38041a856d22a5e900b4f47ea6cd17eed10a021cd58618d1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}