URL Snippet

Hello, I was able to create an URL Snippet to automatically create a package from a convention. However, in my use case, I would like the URL to create the package and automatically allow the signer to sign in person. When I run my URL snippet, it still forces me to manually submit the "sign" button from the package. I've attached a screenshot of the what my snippet produces. Is there a way to automate the submitting of the sign button from the URL snippet? Thanks