How to get search data from post form?

Question

Python

I need to analyze the site for the presence of certain data there.
There is no list of all pages, so you have to use the search. The search results page looks like this:

sitename.com/list?params=H4sIAAAAAAAAA6tWKi4tykvMTVWyUoopNTAxNASTqSDSyADMtgCTpmDSSKkWALPtnecyAAAA

I do not understand what this parameter is and how it is formed. There is an idea to use Selenium, but I want a faster solution to the issue. Is there any other way to emulate a post request from a search form?

Answer 1

Perhaps the given url is the next request after the post
is the search results
Site name and how the search is done (screenshot)