Is it possible to escape special characters in dynamically added cell data in request messages?

I would like to build a link to a Smartsheet form from another sheet's workflow, including default values as described here:

Those default values should be set from a cell using {{ }} as described here:

My problem is that the cell data includes spaces, which aren't allowed in URLs. Is there a way to automatically replace special characters in the cell data? The templating engine for jekyll for instance would solve this with something like {{ColumnName | uri_escape}}

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