diff --git a/src/main/java/com/company/agentfoundation/controller/GlobalExceptionHandler.java b/src/main/java/com/company/agentfoundation/controller/GlobalExceptionHandler.java
index 148b1be..d3b09b4 100644
--- a/src/main/java/com/company/agentfoundation/controller/GlobalExceptionHandler.java
+++ b/src/main/java/com/company/agentfoundation/controller/GlobalExceptionHandler.java
@@ -1,6 +1,8 @@
 package com.company.agentfoundation.controller;
 
 import com.company.agentfoundation.security.UnauthorizedException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ExceptionHandler;
@@ -12,18 +14,23 @@ import java.util.Map;
 
 @RestControllerAdvice
 public class GlobalExceptionHandler {
+  private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);
+
   @ExceptionHandler(UnauthorizedException.class)
   public ResponseEntity<Map<String, Object>> unauthorized(UnauthorizedException ex) {
+    log.warn("request unauthorized: {}", ex.getMessage());
     return build(HttpStatus.UNAUTHORIZED, ex.getMessage());
   }
 
   @ExceptionHandler(IllegalArgumentException.class)
   public ResponseEntity<Map<String, Object>> badRequest(IllegalArgumentException ex) {
+    log.warn("request bad: {}", ex.getMessage(), ex);
     return build(HttpStatus.BAD_REQUEST, ex.getMessage());
   }
 
   @ExceptionHandler(Exception.class)
   public ResponseEntity<Map<String, Object>> generic(Exception ex) {
+    log.error("request failed", ex);
     return build(HttpStatus.INTERNAL_SERVER_ERROR, ex.getMessage());
   }
 
diff --git a/src/main/java/com/company/agentfoundation/integration/wecom/WecomIncomingMessage.java b/src/main/java/com/company/agentfoundation/integration/wecom/WecomIncomingMessage.java
index c02513b..baa4fbf 100644
--- a/src/main/java/com/company/agentfoundation/integration/wecom/WecomIncomingMessage.java
+++ b/src/main/java/com/company/agentfoundation/integration/wecom/WecomIncomingMessage.java
@@ -1,8 +1,10 @@
 package com.company.agentfoundation.integration.wecom;
 
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
 
+@JsonIgnoreProperties(ignoreUnknown = true)
 @JacksonXmlRootElement(localName = "xml")
 public class WecomIncomingMessage {
   @JacksonXmlProperty(localName = "ToUserName")