I'm building a flow to automatically generate a subsite when a new project is entered in a specific sharepoint list. This http request is doing a great job, but it's creating a "classic look" site. As you can see in second screenshot.
I tried to change the WebTemplate property to "STS#3" but that gave an error (invalid JSON if I recall that correctly). and "SITEPAGEPUBLISCHING#0" generates a communication site which is also not really what I am trying to accomplish.