def METHOD_NAME(study_id, access_key=ACCESS_KEY, secret_key=SECRET_KEY):
    """ Provides a list of user ids enrolled in the given study. """
    url = API_URL_BASE + 'get-users/v1'
    values = {
        'access_key': access_key,
        'secret_key': secret_key,
        'study_id': study_id,
    }
    data = requests.post(url, data=values).content.decode()
    return json.loads(data)