diff --git a/tools/sources/message.rs b/tools/sources/messaging_api/models/message.rs
similarity index 100%
rename from tools/sources/message.rs
rename to tools/sources/messaging_api/models/message.rs
diff --git a/tools/sources/event.rs b/tools/sources/webhook/models/event.rs
similarity index 100%
rename from tools/sources/event.rs
rename to tools/sources/webhook/models/event.rs
diff --git a/tools/sources/message_content.rs b/tools/sources/webhook/models/message_content.rs
similarity index 100%
rename from tools/sources/message_content.rs
rename to tools/sources/webhook/models/message_content.rs
diff --git a/tools/sources/webhook/models/source.rs b/tools/sources/webhook/models/source.rs
new file mode 100644
index 00000000..1ff25371
--- /dev/null
+++ b/tools/sources/webhook/models/source.rs
@@ -0,0 +1,40 @@
+/*
+* Copyright 2023 nanato12
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+/*
+ * Webhook Type Definition
+ *
+ * Webhook event definition of the LINE Messaging API
+ *
+ * The version of the OpenAPI document: 1.0.0
+ *
+ * Generated by: https://openapi-generator.tech
+ */
+
+use super::{GroupSource, RoomSource, UserSource};
+
+/// Source : the source of the event.
+
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[serde(tag = "type")]
+pub enum Source {
+    #[serde(rename = "group")]
+    GroupSource(GroupSource),
+    #[serde(rename = "user")]
+    UserSource(UserSource),
+    #[serde(rename = "room")]
+    RoomSource(RoomSource),
+}