Trouble tracing source of queries in a dynamically generated table from a GET request in JavaScript

I have this URL, and when it opens it loads up a table dinamically using JavaScript.

I looked into the network tab while the page is loading, and found out that there is a GET request to get a JSON file for the table, which pings the /fnet/publico/pesquisarGerenciadorDocumentosDados route with some extra queries.

Most of them are the same for any cnpjFundo, but there are two queries I'm having trouble finding where they come from: administrador and _. Is there a way I can find where the website is pulling these values from?

I've tried looking through some of the js scripts, but I can't make sense of anything.

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