public async Task <UserEntity> GetById(string userId)
        {
            var tableQuery = new TableQuery <UserEntity>()
                             .Where(TableQuery.GenerateFilterCondition(nameof(UserEntity.Id), QueryComparisons.Equal, userId));
            var results = await TableClient.ExecuteQuerySegmentedAsync(tableQuery, new TableContinuationToken());

            return(results.Results.SingleOrDefault());
        }