from typing import List
import json


def transform_application_assigned_users(json_app_data: str) -> List[str]:
    """
    Transform application users data for graph consumption
    :param json_app_data: raw json application data
    :return: individual user id
    """

    users: List[str] = []
    app_data = json.loads(json_app_data)
    for user in app_data:
        users.append(user["id"])

    return users