import requests
import base64

cookies = {
    'rsess_id': 'pqklv72pdbduc2u7okus1atcun287ka8',
    'token_stat': '5d1ba089594-09d',
    'e5982dc': '0cfe0ef3a357503c4a4538414b870ca1',
    'top100_id': 't1.4511585.1888377750.1612261193532',
    'last_visit': '1612250600080::1612261400080',
}

headers = {
    'Connection': 'keep-alive',
    'Pragma': 'no-cache',
    'Cache-Control': 'no-cache',
    'Accept': 'application/json, text/javascript, */*; q=0.01',
    'DNT': '1',
    'X-Requested-With': 'XMLHttpRequest',
    'X-REESTR-TOKEN': 'r158251afeg',
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36 OPR/73.0.3856.344',
    'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
    'Origin': 'https://rosreester.net',
    'Sec-Fetch-Site': 'same-origin',
    'Sec-Fetch-Mode': 'cors',
    'Sec-Fetch-Dest': 'empty',
    'Referer': 'https://rosreester.net/',
    'Accept-Language': 'ru-RU,ru;q=0.9,en-US;q=0.8,en;q=0.7',
}
address = 'Москва Славянская 4с1'
encoded = base64.b64encode(str.encode(address))
data = {
  'b': encoded,
  'p': '1'
}

response = requests.post('https://rosreester.net/ajax/get_egrn_by_b.json', headers=headers, cookies=cookies, data=data)
final_result = response.json()