i want to know what data send on this page?

i developed a program by php to fetch this website data using curl, but now i want to know what happen when "Beden" select box change to i simulate that, this product have a tag named hasOptionPrice = true and send some variables to server, i want to know what variables send to send thats by php and get data. thanks

link: https://urun.n11.com/tisort-atlet/fender-logo-4-siyah-unisex-tisort-P360370557?recId=jzh8duyb-841fiv8q6qg-S.W_404-1b0ryyv