Create extrinsic_record.json

extrinsic_record.json

@@ -0,0 +1,4 @@
+{
+  "extrinsic": "454863-5",
+  "hotkey": "5DArPWYa7CvBXHQNugo3KJPudwj8EsSiWJPRPK59k6YqrvUz"
+}