Is there a way to pass data to a Snippet in the Dynamic Forms API other than encoding the data in the URL?

Currently, it seems that the only way to pass data into a snippet is to encode it in the "url" of the snippet, e.g;

<gs-snippet snippet="my_snippet?myData=some_data"></gs-snippet>

I'm worried about hitting a size limit with regards to the length of my url with this method, as well as it making some difficult to read code, if you have lots of variables to pass.