diff --git a/signatures/version1/cla.json b/signatures/version1/cla.json
new file mode 100644
index 00000000..fe20ec3c
--- /dev/null
+++ b/signatures/version1/cla.json
@@ -0,0 +1,12 @@
+{
+  "signedContributors": [
+    {
+      "name": "w-okada",
+      "id": 48346627,
+      "comment_id": 1667653492,
+      "created_at": "2023-08-07T11:07:00Z",
+      "repoId": 527419347,
+      "pullRequestNo": 659
+    }
+  ]
+}
\ No newline at end of file