def METHOD_NAME(username: str, password: str, server_url: str) -> Tuple[str, str]:
    """
    Get a user access token from the webserver.
    """
    payload = {
        "username": username,
        "password": str_to_b64_str(password),
    }
    response = requests.post(server_url + LOGIN_PATH, json=payload)
    handle_cli_response(response, verbose=False)
    user_id: str = response.json()["user_data"]["id"]
    access_token: str = response.json()["token_data"]["access_token"]
    return (user_id, access_token)