Hey @ScottRichards! Welcome back to the community. 
I think there are a couple of things to consider here. First - for an update action, in particular - it looks like the "Database ref" input probably expects something of the form databaseName/objectKey. In your case, that would be something like blogs/2023-08.
The second important thing is correctly building and formatting the new object, which @TRF's post addresses well!
I hope that helps - let me know if you have any additional questions. 