gistfile1.cs

public class ErrorEntity : TableServiceEntity
{
     public string BlobId { get; set; }
     private Error OriginalError { get; set; }

     public ErrorEntity() { }
     public ErrorEntity(Error error) : base(...)
     {
          this.OriginalError = error;
     }

     public Error GetOriginalError()
     {
          return this.OriginalError;
     }
}