diff --git a/Realtime/Signature/LCIMSignature.cs b/Realtime/Signature/LCIMSignature.cs
index 957a303..815d246 100644
--- a/Realtime/Signature/LCIMSignature.cs
+++ b/Realtime/Signature/LCIMSignature.cs
@@ -1,19 +1,27 @@
 namespace LeanCloud.Realtime {
+    /// <summary>
+    /// 签名数据
+    /// </summary>
     public class LCIMSignature {
+        /// <summary>
+        /// 签名
+        /// </summary>
         public string Signature {
             get; set;
         }
 
+        /// <summary>
+        /// 时间戳
+        /// </summary>
         public long Timestamp {
             get; set;
         }
 
+        /// <summary>
+        /// 随机字符串
+        /// </summary>
         public string Nonce {
             get; set;
         }
-
-        public LCIMSignature() {
-            
-        }
     }
 }
diff --git a/Realtime/Signature/LCIMSignatureAction.cs b/Realtime/Signature/LCIMSignatureAction.cs
index f59a6eb..013ed5d 100644
--- a/Realtime/Signature/LCIMSignatureAction.cs
+++ b/Realtime/Signature/LCIMSignatureAction.cs
@@ -1,17 +1,36 @@
 namespace LeanCloud.Realtime {
+    /// <summary>
+    /// 支持签名的动作
+    /// </summary>
     public static class LCIMSignatureAction {
-        // 邀请
+        /// <summary>
+        /// 邀请
+        /// </summary>
         public const string Invite = "invite";
-        // 踢出
+
+        /// <summary>
+        /// 踢出
+        /// </summary>
         public const string Kick = "kick";
 
-        //
+        /// <summary>
+        /// 用户拉黑对话
+        /// </summary>
         public const string ClientBlockConversations = "client-block-conversations";
 
+        /// <summary>
+        /// 用户解除拉黑对话
+        /// </summary>
         public const string ClientUnblockConversations = "client-unblock-conversations";
 
+        /// <summary>
+        /// 对话拉黑用户
+        /// </summary>
         public const string ConversationBlockClients = "conversation-block-clients";
 
+        /// <summary>
+        /// 对话解除拉黑用户
+        /// </summary>
         public const string ConversationUnblockClients = "conversation-unblock-clients";
     }
 }