Web-scraping: GET request returns a string – how can I read/process it in R?

I’m sending a GET request to an governmental page in India with the following URL:
https://pmfby.gov.in/landingPage/districtState?stateID=2F3DE245-46E6-4C4D-9297-C0B23C803B15&sssyID=02012223

What this basically does on their webpage (https://pmfby.gov.in/ -> “Insurance Premium Calculator”) is returning all districts for a specific state selected (with JavaScript).

I used the following R code to reproduce this:

content(httr::GET("https://pmfby.gov.in/landingPage/districtState?stateID=2F3DE245-46E6-4C4D-9297-C0B23C803B15&sssyID=02012223"))

I somehow expected to get a HTML or JSON structured return with a list of those districts. What I actually get back however is a string that starts with “09f2ba53495a95c8d6189182d996252553a088b548d4f3c7caf1e195ff….”.

I don’t even know what format this is and I’m unable to convert/process this is R.
Is there any solution to my problem?