@startuml
title User Management System

actor Admin

participant UserController
participant UserService
participant Database

Admin -> ManageUsers

ManageUsers    -> UserController: <<create>>
UserController -> UserService: <<create>>
UserController -> UserService: add_user(user_info)
UserService    -> UserService: validate_user_info(user_info)
UserService    -> Database: Add User to Database
@enduml