Откуда грузятся данные на странице?

#!/usr/bin/env python3

import requests
import json
from pprint import pprint


data = {
    "selectedSports": [],
    "searchWords": None,
    "considerSearchWords": False,
    "dateType": "RANGE",
    "singlePageMode": True,
    "page": 0,
    "totalPages": 0,
    "collapsedSports": False,
    "currentCollapsedSport": None,
    "openedSportCategoryIds": [],
    "collapsedSportCategoryIds": [],
    "dateExact": 1550696400000,
    "dateRange": {
        "first": 1550696400000,
        "second": 1550696400000,
        "version": 0,
        "fields": [
            1550696400000,
            1550696400000
        ],
        "fieldNames": [
            "first",
            "second"
        ],
        "filled": True
    },
    "startWeekDate": 1550178000000,
    "minDate": 946699200000,
    "maxDate": 1550696400000
}

url = 'https://www.marathonbet.ru/su/react/results/list'
headers = {
	'Content-type': 'application/json',
	"Referer": 'https://www.marathonbet.ru/su/results.htm'
}

r = requests.post(url, data=json.dumps(data), headers=headers)
res = r.json()
pprint(res)