Add extrinsic record

extrinsic_record.json

@@ -0,0 +1,4 @@
+{
+  "extrinsic": "7667093-21",
+  "hotkey": "5FNp64ecxDC2FiVrhzMySrtr8K7M2HToxqWGVKAqErP2Kq63"
+}