SF_11.0, SF_11.1, SF_11.2, SF_12.0, SF_12.1, SF_12.2, SF_13.0, SF_13.1, SF_13.2, SF_13.3, SF_14.0, SF_14.1, SF_14.2, SF_14.3 - https://docs.sitefinity.com/for-developers-log-service-events

IOnReconcileExecutedEvent_Bootstrapped_Global.asax.cs

using System;
using Telerik.Sitefinity.Abstractions;
using Telerik.Sitefinity.Services;
using Telerik.Sitefinity.Services.Statistics;

namespace SitefinityWebApp
{
    public class Global : System.Web.HttpApplication
    {
        protected void Application_Start(object sender, EventArgs e)
        {
            Bootstrapper.Bootstrapped += Bootstrapper_Bootstrapped9;
        }

        private void Bootstrapper_Bootstrapped9(object sender, EventArgs e)
        {
            EventHub.Subscribe<IOnReconcileExecutedEvent>(evt => IOnReconcileExecutedEventHandler(evt));
        }

        public void IOnReconcileExecutedEventHandler(IOnReconcileExecutedEvent eventInfo)
        {
            string userId = eventInfo.UserId;
            string trackingId = eventInfo.TrackingId;
        }
    }
}