public async Task AppendEvacueeRegistrationAuditEntryAsync(RegistrationEvent notification, string userId, string userName, string userType)
        {
            await db.EvacueeRegistrationAudits.AddAsync(new Models.Db.EvacueeRegistrationAudit
            {
                User          = userId,
                UserName      = userName,
                UserType      = userType,
                Action        = notification.GetType().Name,
                EssFileNumber = long.Parse(notification.EssFileNumber),
                Content       = JsonConvert.SerializeObject(notification)
            });

            await db.SaveChangesAsync();
        }