Delegate-based C# Event manager

public static class EventManager
{
    public static void Subscribe<T>(Action<T> handler) where T : GameEvent
    {
        EventManagerInternal<T>.Subscribe(handler);
    }
    public static void Unsubscribe<T>(Action<T> handler) where T : GameEvent
    {
        EventManagerInternal<T>.Unsubscribe(handler);
    }
    public static void Raise<T>(T e) where T : GameEvent
    {
        EventManagerInternal<T>.Raise(e);
    }
    private static class EventManagerInternal<T> where T : GameEvent
    {
        private static Dictionary<Type, Action<T>> dic = new Dictionary<Type, Action<T>>();
        public static void Subscribe(Action<T> handler)
        {
            Type type = typeof(T);
            if (!dic.ContainsKey(type)) {
                dic[type] = handler;
                Console.WriteLine("Registered new type: " + type);
            }
            else {
                // make sure the handler doesn't exist first
                bool hasHandlerSubscribed = dic[type].GetInvocationList().Any(h => h.Equal(shandler));
                if (hasHandlerSubscribed) {
                    Console.WriteLine(handler.Method.Name + " has already subbed to an event of type " + type);
                    return;
                }
                dic[type] += handler;
            }
            Console.WriteLine("Method " + handler.Method.Name + " has subbed to receive notifications from " + type);
        }
        public static void Unsubscribe(Action<T> handler)
        {
            Type type = typeof(T);

            // make sure the type exists
            if (!dic.ContainsKey(type)) {
                Console.WriteLine("Type " + type + " hasn't registered at all, it doesn't have any subscribers... at least not in my book...");
                return;
            }

            // remove the handler from the chain
            dic[type] -= handler;

            // if there's no more subscribers to the "type" entry, remove it
            if (dic[type] == null) {
                dic.Remove(type);
                Console.WriteLine("No more subscribers to " + type);
            }
        }
        public static void Raise(T e)
        {
            Action<T> handler;
            if (dic.TryGetValue(e.GetType(), out handler)) {
                handler.Invoke(e);
            }
        }
    }
}