Unity Global Event Listener

//The commented lines can be restored if the project contains the Odin Inspector
using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
//using Sirenix.OdinInspector;

//Add this component to a gameobject to listen for global events, and fire
//an instance of unity event (set up in inspector) in response.
public class GlobalEventListener : MonoBehaviour {
    public string GlobalEventName;
    public UnityEvent OnGlobalEventInvoked;

    //[DisableInEditorMode, Button, HorizontalGroup(Title = "Debug")]
    public void DebugGlobalEventDictionary() {
        GlobalEvent.DebugDictionary();
    }

    //[DisableInEditorMode, Button, HorizontalGroup(Title = "Debug")]
    public void InvokeGlobalEvent() {
        GlobalEvent.Invoke(GlobalEventName);
    }

    //[DisableInEditorMode, Button, HorizontalGroup(Title = "Debug")]
    public void InvokeListenerEvent() {
        OnGlobalEventInvoked.Invoke();
    }

    private void OnEnable() {
        GlobalEvent.Subscribe(GlobalEventName, InvokeListenerEvent);
    }

    private void OnDisable() {
        GlobalEvent.Unsubscribe(GlobalEventName, InvokeListenerEvent);
    }
}

//GlobalEvents can be fired from any code by calling GlobalEvent.Invoke(string)
public static class GlobalEvent {
    static Dictionary<string, Action> EventDictionary = new Dictionary<string, Action>();

    public static void DebugDictionary() {
        foreach (string key in EventDictionary.Keys) {
            int count = 0;
            Action _action;
            if (EventDictionary.TryGetValue(key, out _action)) {
                count = _action.GetInvocationList().Length;
            }
            Debug.Log("GlobalEvent " + key + ": " + count);
        }
    }

    public static void Subscribe(string name, Action action) {
        Action _action;
        if (EventDictionary.TryGetValue(name, out _action)) {
            _action += action;
            EventDictionary[name] = _action;
        }
        else {
            EventDictionary.Add(name, action);
        }
    }

    public static void Unsubscribe(string name, Action action) {
        Action _action;
        if (EventDictionary.TryGetValue(name, out _action)) {
            _action -= action;
            if (_action == null) {
                EventDictionary.Remove(name);
            }
            else {
                EventDictionary[name] = _action;
            }
        }
    }

    public static void Invoke(string name) {
        Action _action;
        if (EventDictionary.TryGetValue(name, out _action))
            _action.Invoke();
        else
            Debug.LogWarning("No subscribers to GlobalEvent: " + name);
    }
}