Add extrinsic record

extrinsic_record.json

@@ -0,0 +1,4 @@
+{
+  "extrinsic": "7552276-11",
+  "hotkey": "5ERqyaiv8zJhxeUqwP2gugsmtWKvinMLxnUQ8bHVVffMgaEE"
+}