Problem firing Things3 URL

I have a Things3 URL that triggers properly within the app. When I set up an Open URL action, it fails with an invalid URL. The filter string is the code for the emoji I use for a tag. That seems to be the problem, because I can successfully trigger a tag filter that is not an emoji. The encoding listed in the macro works as a clickable link in Things3. How do I encode it properly so that it will work as a macro in KM?

(The macro doesn't have a trigger because I fire it from my Stream Deck. )

Use Execute Shell Script Action instead

Worked perfectly. Thank you!