s = requests.Session()

# GET

url = _build_sc_url('/profile/signin', secure=True)
r = s.get(url)
soup = BeautifulSoup(r.text)
selector = '#formLogin input[name=__RequestVerificationToken]'
verif_token = soup.select(selector)[0].attrs['value']

# POST

headers = {
    'X-Requested-With': 'XMLHttpRequest',
    'Content-Type': 'application/json', # remove when using json=...
}
payload = {
    '__RequestVerificationToken': verif_token,
    'login': 'rootri',
    'password': 'dM20kzqhv5',
    'rememberme': True,
}
url = _build_sc_url('/profile/signincompact', secure=True)
# r = s.post(url, headers=headers, json=payload, allow_redirects=False)
r = s.post(url, headers=headers, data=json.dumps(payload),
           allow_redirects=False)

if not r.json()['Status']:
    raise LoginFailureError(r.json()['ErrorText'])

self._sc_bot.sc_cookies = r.cookies