These gists are designed to be used with your INTU node signer: https://github.com/intu-labs/intu_node_signer
Instructions on using them can be found here: https://github.com/intu-labs/
An examples can be found here:
You include the gist in your 'routes' folder, import it into your main index.js file, and use it!
https://github.com/intu-labs/intu_node_signer/blob/main/src/routes/healthRoute.ts