Signing a bodypart

Hi,
  Is it possible to use soapUI to sign a specific part in the body? I have acchaed an example below. I want to sign the ConsentId and than add the signature. Can I do this with soapUi or are there some other tool I can use?


 
     
        str
           
             
                 
                 
                 
                   
                    0000
                 
             
            0000