def parse_enrolled_students(enrolled_users):
    """
    Parse the statements containing all enrolled students of a course.

    :param enrolled_users: A json statement, received as response on a Moodle call.
    :type enrolled_users: list(dict(str, int))
    :return: A list of the ids of the enrolled students.
    :rtype: list(str)
    """
    students = []
    for student_info in enrolled_users:
        students.append(str(student_info['id']))
    return students