You can create match rules in the Advanced Editor.

You can use the Advanced editor to specify the match rules in the JSON format. When you are in the Rules builder view, click the ADVANCED EDITOR link to open the match rule in the Advanced editor view. The JSON editor displays the match rule as an easily editable JSON file.

The VIEW SUPPORTED CONFIGURATION link opens the relevant documentation that lists some sample match rules.

Click the RULES BUILDER link to return to the Rules builder view. You can also click SAVE to update the match rule after making the required changes.