diff --git a/BlueWest.Data/Data/AAttribute.cs b/BlueWest.Data/Data/AAttribute.cs
new file mode 100644
index 0000000..30e0ee6
--- /dev/null
+++ b/BlueWest.Data/Data/AAttribute.cs
@@ -0,0 +1,25 @@
+using System;
+
+namespace BlueWest.Data
+{
+    /// <summary>
+    /// Specifies that the annotated class can be mapped from the provided <see cref="SourceType"/>.
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct)]
+    public sealed class AAttribute : Attribute
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MapFromAttribute"/> class with the specified <paramref name="sourceType"/>.
+        /// </summary>
+        /// <param name="sourceType">The type of to map from.</param>
+        public AAttribute(Type sourceType)
+        {
+            SourceType = sourceType;
+        }
+
+        /// <summary>
+        /// Gets the type to map from.
+        /// </summary>
+        public Type SourceType { get; }
+    }
+}
\ No newline at end of file
diff --git a/BlueWest.Data/Data/FinanceTransaction.cs b/BlueWest.Data/Data/FinanceTransaction.cs
index 810a298..742ef3f 100644
--- a/BlueWest.Data/Data/FinanceTransaction.cs
+++ b/BlueWest.Data/Data/FinanceTransaction.cs
@@ -22,7 +22,7 @@ namespace BlueWest.Data
     }
 
     [MessagePackObject]
-    public struct FinanceTransaction
+    public partial struct FinanceTransaction
     {
         [Key(1)] public int Id { get; set; }
         [Key(2)] public int UserId { get; set; }
diff --git a/BlueWest.Data/Data/FinanceTransactionReadDto.cs b/BlueWest.Data/Data/FinanceTransactionReadDto.cs
new file mode 100644
index 0000000..0b667ee
--- /dev/null
+++ b/BlueWest.Data/Data/FinanceTransactionReadDto.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using MapTo;
+
+namespace BlueWest.Data
+{
+    [AAttribute(typeof(FinanceTransaction))]
+    public partial class FinanceTransactionReadDto
+    {
+    }
+}
diff --git a/BlueWest.sln b/BlueWest.sln
index b28f4f5..0800809 100644
--- a/BlueWest.sln
+++ b/BlueWest.sln
@@ -1,14 +1,15 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BlueWest", "BlueWest\BlueWest.csproj", "{293E7852-8AFD-4EFB-8C2D-F1BBE68AEE78}"
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.31911.196
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BlueWest", "BlueWest\BlueWest.csproj", "{293E7852-8AFD-4EFB-8C2D-F1BBE68AEE78}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BlueWest.Data", "BlueWest.Data\BlueWest.Data.csproj", "{E518C62D-768C-4885-9C9D-FD5761605B54}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BlueWest.Data", "BlueWest.Data\BlueWest.Data.csproj", "{E518C62D-768C-4885-9C9D-FD5761605B54}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BlueWest.WebApi", "BlueWest.WebApi\BlueWest.WebApi.csproj", "{6D3321B5-CF1A-4251-B28D-329EDA6DC278}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BlueWest.WebApi", "BlueWest.WebApi\BlueWest.WebApi.csproj", "{6D3321B5-CF1A-4251-B28D-329EDA6DC278}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BlueWest.Collections", "BlueWest.Collections\BlueWest.Collections.csproj", "{F55019A2-E2A8-4AF1-8FBC-FA99476A1B1C}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MapTo", "MapTo\src\MapTo\MapTo.csproj", "{7D8CF461-E20D-48A0-981C-5B60792C56C8}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BlueWest.Collections", "BlueWest.Collections\BlueWest.Collections.csproj", "{F55019A2-E2A8-4AF1-8FBC-FA99476A1B1C}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -32,9 +33,11 @@ Global
 		{F55019A2-E2A8-4AF1-8FBC-FA99476A1B1C}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F55019A2-E2A8-4AF1-8FBC-FA99476A1B1C}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{F55019A2-E2A8-4AF1-8FBC-FA99476A1B1C}.Release|Any CPU.Build.0 = Release|Any CPU
-		{7D8CF461-E20D-48A0-981C-5B60792C56C8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{7D8CF461-E20D-48A0-981C-5B60792C56C8}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{7D8CF461-E20D-48A0-981C-5B60792C56C8}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{7D8CF461-E20D-48A0-981C-5B60792C56C8}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {F24E44CA-98BA-4B44-A1E1-57912CC5DCC3}
 	EndGlobalSection
 EndGlobal
diff --git a/MapTo b/MapTo
index 4d73897..e314387 160000
--- a/MapTo
+++ b/MapTo
@@ -1 +1 @@
-Subproject commit 4d73897b4e007d690655fdee6813124dc33d88ea
+Subproject commit e3143877729241799c8c578bc4efb062ace8ba00