diff --git a/Box.V2.Test/BoxSignRequestsManagerTest.cs b/Box.V2.Test/BoxSignRequestsManagerTest.cs
index e6b013c0c..d44b19932 100644
--- a/Box.V2.Test/BoxSignRequestsManagerTest.cs
+++ b/Box.V2.Test/BoxSignRequestsManagerTest.cs
@@ -80,6 +80,9 @@ public async Task CreateSignRequest_RequiredParams_Success()
             Assert.AreEqual(1, response.Signers.Count);
             Assert.AreEqual("example@gmail.com", response.Signers[0].Email);
             Assert.AreEqual("12345", response.ParentFolder.Id);
+            Assert.AreEqual(1, response.Signers[0].Inputs.Count);
+            Assert.IsTrue(response.Signers[0].Inputs[0].CheckboxValue.Value);
+            Assert.AreEqual(BoxSignRequestSingerInputContentType.checkbox, response.Signers[0].Inputs[0].ContentType);
         }
 
         [TestMethod]
@@ -153,6 +156,9 @@ public async Task CreateSignRequest_OptionalParams_Success()
             Assert.AreEqual("12345", response.SourceFiles[0].Id);
             Assert.AreEqual(1, response.Signers.Count);
             Assert.AreEqual("example@gmail.com", response.Signers[0].Email);
+            Assert.AreEqual(1, response.Signers[0].Inputs.Count);
+            Assert.IsTrue(response.Signers[0].Inputs[0].CheckboxValue.Value);
+            Assert.AreEqual(BoxSignRequestSingerInputContentType.checkbox, response.Signers[0].Inputs[0].ContentType);
             Assert.AreEqual("12345", response.ParentFolder.Id);
             Assert.IsTrue(response.IsDocumentPreparationNeeded);
             Assert.IsTrue(response.AreRemindersEnabled);
@@ -236,6 +242,9 @@ public async Task GetSignRequestById_Success()
             Assert.AreEqual("12345", response.SourceFiles[0].Id);
             Assert.AreEqual(1, response.Signers.Count);
             Assert.AreEqual("example@gmail.com", response.Signers[0].Email);
+            Assert.AreEqual(1, response.Signers[0].Inputs.Count);
+            Assert.IsTrue(response.Signers[0].Inputs[0].CheckboxValue.Value);
+            Assert.AreEqual(BoxSignRequestSingerInputContentType.checkbox, response.Signers[0].Inputs[0].ContentType);
             Assert.AreEqual("12345", response.ParentFolder.Id);
             Assert.IsTrue(response.IsDocumentPreparationNeeded);
             Assert.IsTrue(response.AreRemindersEnabled);
diff --git a/Box.V2.Test/Fixtures/BoxSignRequest/CancelSignRequest200.json b/Box.V2.Test/Fixtures/BoxSignRequest/CancelSignRequest200.json
index a45afb155..8b9a310d7 100644
--- a/Box.V2.Test/Fixtures/BoxSignRequest/CancelSignRequest200.json
+++ b/Box.V2.Test/Fixtures/BoxSignRequest/CancelSignRequest200.json
@@ -62,7 +62,8 @@
           "checkbox_value": true,
           "date_value": "2021-04-26T08:12:13.982Z",
           "type": "text",
-          "page_index": 4
+          "page_index": 4,
+          "content_type": "checkbox"
         }
       ],
       "embed_url": "https://example.com"
diff --git a/Box.V2.Test/Fixtures/BoxSignRequest/CreateSignRequest200.json b/Box.V2.Test/Fixtures/BoxSignRequest/CreateSignRequest200.json
index 6b9c07473..18c1388b9 100644
--- a/Box.V2.Test/Fixtures/BoxSignRequest/CreateSignRequest200.json
+++ b/Box.V2.Test/Fixtures/BoxSignRequest/CreateSignRequest200.json
@@ -62,7 +62,8 @@
           "checkbox_value": true,
           "date_value": "2021-04-26T08:12:13.982Z",
           "type": "text",
-          "page_index": 4
+          "page_index": 4,
+          "content_type": "checkbox"
         }
       ],
       "embed_url": "https://example.com"
diff --git a/Box.V2.Test/Fixtures/BoxSignRequest/GetAllSignRequests200.json b/Box.V2.Test/Fixtures/BoxSignRequest/GetAllSignRequests200.json
index 0b6867681..78fed1faa 100644
--- a/Box.V2.Test/Fixtures/BoxSignRequest/GetAllSignRequests200.json
+++ b/Box.V2.Test/Fixtures/BoxSignRequest/GetAllSignRequests200.json
@@ -30,7 +30,8 @@
               "checkbox_value": true,
               "date_value": "2021-04-26T08:12:13.982Z",
               "type": "text",
-              "page_index": 4
+              "page_index": 4,
+              "content_type": "checkbox"
             }
           ],
           "embed_url": "https://example.com"
diff --git a/Box.V2.Test/Fixtures/BoxSignRequest/GetSignRequest200.json b/Box.V2.Test/Fixtures/BoxSignRequest/GetSignRequest200.json
index 6b9c07473..18c1388b9 100644
--- a/Box.V2.Test/Fixtures/BoxSignRequest/GetSignRequest200.json
+++ b/Box.V2.Test/Fixtures/BoxSignRequest/GetSignRequest200.json
@@ -62,7 +62,8 @@
           "checkbox_value": true,
           "date_value": "2021-04-26T08:12:13.982Z",
           "type": "text",
-          "page_index": 4
+          "page_index": 4,
+          "content_type": "checkbox"
         }
       ],
       "embed_url": "https://example.com"
diff --git a/Box.V2/Models/BoxSignRequestSigner.cs b/Box.V2/Models/BoxSignRequestSigner.cs
index c2e6fc1ea..812e93bdf 100644
--- a/Box.V2/Models/BoxSignRequestSigner.cs
+++ b/Box.V2/Models/BoxSignRequestSigner.cs
@@ -96,6 +96,7 @@ public class BoxSignRequestSignerInput
     {
         public const string FieldType = "type";
         public const string FieldCheckboxValue = "checkbox_value";
+        public const string FieldContentType = "content_type";
         public const string FieldDateValue = "date_value";
         public const string FieldDocumentTagId = "document_tag_id";
         public const string FieldPageIndex = "page_index";
@@ -114,6 +115,13 @@ public class BoxSignRequestSignerInput
         [JsonProperty(PropertyName = FieldCheckboxValue)]
         public virtual bool? CheckboxValue { get; private set; }
 
+        /// <summary>
+        /// Content type of input.
+        /// </summary>
+        [JsonProperty(PropertyName = FieldContentType)]
+        [JsonConverter(typeof(StringEnumConverter))]
+        public virtual BoxSignRequestSingerInputContentType ContentType { get; private set; }
+
         /// <summary>
         /// Date prefill value.
         /// </summary>
@@ -150,6 +158,25 @@ public enum BoxSignRequestSingerInputType
         checkbox
     }
 
+    /// <summary>
+    /// Content type of input.
+    /// </summary>
+    public enum BoxSignRequestSingerInputContentType
+    {
+        initial,
+        stamp,
+        signature,
+        company,
+        title,
+        email,
+        full_name,
+        first_name,
+        last_name,
+        text,
+        date,
+        checkbox
+    }
+
     /// <summary>
     /// Final decision made by the signer.
     /// </summary>