Need to Embed Ad

Hi, 

In our application we already have DocuSign, so we can sign the doc and it takes the return URL, so Once signing is done we make to return to the last page through the return URL, in return url we save the sign document and redirect to other URL based on return URL parameters. And also It also has "send for signature" and "cancel the sent for signature" feature. So how to embed the adobe sign to our App and how it redirect once signing is done or sent for signing is done