Intercept the action of a user being updated and get the 'before update' and 'after update' value of

Using a custom global event handler, I am trying to intercept the action of a user being updated specifically the enabled("UserEnabled") value of a user being updated when they are edited in the CMS. I need to compare the before and after update value of the field and perform custom logic if the user was not enabled and is then changed to enabled.

I have been scouring through all the documentation and devnet posts that are somewhat related to this issue but cannot find the resolution I require. Can anyone help? Code attached:

    using System;
    using CMS;
    using CMS.DataEngine;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using CMSApp.CustomEventHandlers;
    using CMS.Membership;
    using CMS.EventLog;
    using System.Diagnostics;
    using CMS.ContactManagement;
    using CMSApp.Code;
    using System.Text;
    using System.Net.Mail;
    using System.Web.Configuration;

    // Registers the custom module into the system
    [assembly: RegisterModule(typeof(UserEventHandler))]

    public class UserEventHandler : Module
    {
        // Module class constructor, the system registers the module under the name "CustomUserEventHandler"
        public UserEventHandler() : base("CustomUserEventHandler")
        {

        }

        // Contains initialization code that is executed when the application starts
        protected override void OnInit()
        {
            base.OnInit();

            UserInfo.TYPEINFO.Events.Update.Before += UserGroup_UpdateAfterEventHandler;
        }

        private void UserGroup_UpdateAfterEventHandler(object sender, ObjectEventArgs user)
        {
            //Check if user is enabled
            //Check enabled field "before value"
            bool userEnabled = (bool)user.Object.GetValue("UserEnabled");
            var userEmail = user.Object.GetValue("Email");
            var userName = user.Object.GetValue("UserName");
            bool userTermsAndConditions = user.Object.GetBooleanValue("TermsAndConditions", false);

            try
            {
                //check if user is enabled and has agreed to T&C on register
                if (userEnabled == true && userTermsAndConditions == true)
                {


                   //custom code

                }
                else if(userEnabled == true && userTermsAndConditions == false)
                {
                    return;
                }
            }
            catch (Exception ex)
            {
                EventLogProvider.LogEvent(EventType.ERROR, "Global Event Handler: User update", "GEVUpdatedUser", "Error Message: " + ex);
                return;
            }
        }
    }