Add extrinsic record

extrinsic_record.json

@@ -0,0 +1,4 @@
+{
+  "extrinsic": "7667054-8",
+  "hotkey": "5HmBZviKUkN2D9gS6d2YPHKWfSSsoGEos19ZCFhoniUNBySk"
+}