diff --git a/EnvelopeGenerator.Application/Common/Dto/SignatureDto.cs b/EnvelopeGenerator.Application/Common/Dto/SignatureDto.cs
index 1395b49d..95ba47da 100644
--- a/EnvelopeGenerator.Application/Common/Dto/SignatureDto.cs
+++ b/EnvelopeGenerator.Application/Common/Dto/SignatureDto.cs
@@ -1,4 +1,5 @@
-using EnvelopeGenerator.Domain.Interfaces;
+using EnvelopeGenerator.Domain.Constants;
+using EnvelopeGenerator.Domain.Interfaces;
 using Microsoft.AspNetCore.Mvc;
 
 namespace EnvelopeGenerator.Application.Common.Dto;
@@ -98,4 +99,9 @@ public class SignatureDto : ISignature
     /// 
     /// </summary>
     public IEnumerable<AnnotationDto>? Annotations { get; set; }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    public SenderAppType SenderAppType { get; set; } = SenderAppType.LegacyFormApp;
 }
\ No newline at end of file