Event Subscriber with Parallelism

I am trying to exploit asynchronism for parallelism. This is my first attempt at a parallel event subscriber. In your expert opinions, is this a valid approach?

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using EventStore.ClientAPI;

namespace Sandbox
{
    public class SomeEventSubscriber
    {
        private Position? _latestPosition;
        private readonly Dictionary<Type, Action<object>> _eventHandlerMapping;
        private IEventStoreConnection _connection;

        public Dictionary<Type, Action<object>> EventHandlerMapping
        {
            get { return _eventHandlerMapping; }
        }

        public SomeEventSubscriber()
        {
            _eventHandlerMapping = CreateEventHandlerMapping();
            _latestPosition = Position.Start;
        }

        public void Start()
        {
            ConnectToEventstore();
        }

        private void ConnectToEventstore()
        {
            _connection = EventStoreConnectionWrapper.Connect();
            _connection.Connected +=
            (sender, args) => _connection.SubscribeToAllFrom(_latestPosition, false, EventOccured, LiveProcessingStarted, HandleSubscriptionDropped);
        }

        private Dictionary<Type, Action<object>> CreateEventHandlerMapping()
        {
            return new Dictionary<Type, Action<object>>
            {
                {typeof (FakeEvent1), o => Handle(o as FakeEvent1)},
                {typeof (FakeEvent2), o => Handle(o as FakeEvent2)},
            };
        }

        private void Handle(FakeEvent1 eventToHandle)
        {
            SomethingLongRunning(eventToHandle);
        }

        private void Handle(FakeEvent2 eventToHandle)
        {
            SomethingLongRunning(eventToHandle);
        }

        private void SomethingLongRunning(BaseFakeEvent eventToHandle)
        {
            Console.WriteLine("Start Handling: " + eventToHandle.GetType());
            for (int i = 0; i < 10000000; i++)
            {

            }
            Console.WriteLine("Finished Handling: " + eventToHandle.GetType());
        }

        private void EventOccured(EventStoreCatchUpSubscription eventStoreCatchUpSubscription,
            ResolvedEvent resolvedEvent)
        {
            if (resolvedEvent.OriginalEvent.EventType.StartsWith("$") || resolvedEvent.OriginalEvent.EventStreamId.StartsWith("$"))
                return;

            var @event = EventSerialization.DeserializeEvent(resolvedEvent.OriginalEvent);
            if (@event != null)
            {
                var eventType = @event.GetType();
                if (_eventHandlerMapping.ContainsKey(eventType))
                {
                    var task = Task.Factory.StartNew(() => _eventHandlerMapping[eventType](@event));
                    Console.WriteLine("The task is running asynchronously...");
                }
            }
            if (resolvedEvent.OriginalPosition != null) _latestPosition = resolvedEvent.OriginalPosition.Value;
        }

        private void HandleSubscriptionDropped(EventStoreCatchUpSubscription subscription, SubscriptionDropReason dropReason, Exception ex)
        {
            if (dropReason == SubscriptionDropReason.ProcessingQueueOverflow)
            {
                //TODO: Wait and reconnect probably with back off
            }

            if (dropReason == SubscriptionDropReason.UserInitiated)
                return;

            if (SubscriptionDropMayBeRecoverable(dropReason))
            {
                Start();
            }
        }

        private static bool SubscriptionDropMayBeRecoverable(SubscriptionDropReason dropReason)
        {
            return dropReason == SubscriptionDropReason.Unknown || dropReason == SubscriptionDropReason.SubscribingError ||
                   dropReason == SubscriptionDropReason.ServerError || dropReason == SubscriptionDropReason.ConnectionClosed;
        }

        private static void LiveProcessingStarted(EventStoreCatchUpSubscription eventStoreCatchUpSubscription)
        {

        }
    }
}