Passing Adobe livecycle designer form to webservice on postSign event

[nbabi]

Dear Community!

   Good day,   Is it possible to pass a pdf to webservice from Adobe livecycle designer pdf's postSign event using javascript ?

I need to save pdf to ms-sql server as soon as the digital signature action took place. can we do something like to Store the pdf  

var pdfData = event.target;

some webservice call -> exporting parameter( pdfData ); something like  this.

I appreciate your help in this matter greatly.

Thanks 

Best Regards

Naim