It's far easier to get a browser running on your blade, than to emulate one which fully supports JS including JQueries and DOM.¹

Maybe you can analyze the involved JS such that Perl can simulate the necessary HTTP communication.

see also "JavaScript" in WWW::Mechanize::FAQ

update

¹) if your only limitation is the lack of display (i.e. not having a GUI), then you probably want to try http://phantomjs.org/ or WWW::WebKit.

See this blog post for more links:

http://blogs.perl.org/users/robhammond/2013/02/web-scraping-with-perl-phantomjs.html