Play Store batchexecute request for top charts, cleaned up (step 2)

index.mjs

import fetch from 'cross-fetch';

(async () => {
    const language = 'en';
    const country = 'de';
    const length = 2;
    const chart_name = 'topselling_free';
    const category_id = 'APPLICATION';

    const res = await fetch(`https://play.google.com/_/PlayStoreUi/data/batchexecute?hl=${language}&gl=${country}`, {
        headers: {
            'Content-Type': 'application/x-www-form-urlencoded;charset=utf-8',
        },
        body: `f.req=${JSON.stringify([
            [
                [
                    'vyAe2',
                    JSON.stringify([[null, [[null, [null, length]], null, null, [113]], [2, chart_name, category_id]]]),
                ],
            ],
        ])}`,
        method: 'POST',
    }).then((r) => r.text());
    console.log(res);
})();