How to grab data about Okta groups from Okta Admin console

script.js

function loop(i) {
	setTimeout(() => {
		fetch('https://' + domain + '/admin/groups/search?iColumns=8&sColumns=id%2Cname%2CappName%2CappDisplayName%2Cdescription%2CuserCount%2CappCount%2CdirCount&orderBy=name&sortDirection=asc&maxResults=100&iDisplayStart=' + i + '&sSearch=')
		.then(resp => resp.text())
		.then(data => {
			var json = JSON.parse(data.substring(11));	// 11 is a number of first symbols to remove from the result, 
									                                // as it's always "while(1){};"
			console.log(json.aaData);			              // just for visual progress tracking
			aaData = aaData.concat(json.aaData);
			if (i < upper)
				loop(i + 100)
		})
	}, timeout)
}

var domain = 'you_domain.okta.com';
var timeout = 10000;			
var upper = 20000;			

var i = 0;
var aaData = [];
loop(i)