Create extrinsic_record.json

extrinsic_record.json

@@ -0,0 +1,4 @@
+{
+  "extrinsic": "454846-5",
+  "hotkey": "5HWBv1tZc9n4ki8T3cX6BEqjBQVo7UnNdq39wCjZ2JSVmzyd"
+}