When you have to handle dynamics parameters, you will have to extract values from server response.
Here is an example:
var extracted = "8A0ewTO\x2fwnduvf\x2fWNtcB9eHNUZs3Z2sV42OBRaEs";
var modified = extracted.replace(/\x2f/g,"/"); // it will replace "\x2f" by "/"
logger.debug("my modified value is =" +modified);