How to get the response error message while calling a webservice

Summary:

I am hitting a third-party webservice from Oracle CX Sales. Whenever the third-party sends us the error message in the response body I have to read the response body and display the error message in CX Sales.

try {

def httpHeaders = ['Content-Type':'application/json','x-functions-key':keyValue];

def wsService = adf.webServices.XXXXX;

 wsService.requestHTTPHeaders = httpHeaders;

 def PUT_param = []

 def wsResponse = wsService.PUT(PUT_param);

}

catch (Exception e)

{

println (e)

}

In the above code, e displays 400 Bad request/ 500 Internal server error. But I need to display the error response body the third party sends.

Please provide any solution for this.