JS console.log() backtick string formatting not working with JSON.parse() as it logs "object object" instead of content

When console-logging a req.body I noticed that while

console.log(JSON.parse(req.body));

displays the parsed values as expected, using backticks for string formatting (e.g.:

console.log(`parsed: ${JSON.parse(req.body)}`);

) logs 'object object' instead.

Why?

Thanks!

PS: sorry for the snippets but using backticks disturbs my second sample's visualisation.