xslt to read the message of specific pattern : I've below message in a variable .

7c&#13; {"code":3001,"message":"issued"}&#13; 0&#13; &#13;

I would like to take the message starting with '{' and ending with '}' using xslt. Tried using sub string and starts with functions .. can some one help.

My final out put should be 
{"code":3001,"message":"issued"}

Thanks

 