Example based on this quickstart guide https://auth0.com/docs/quickstart/backend/golang
The referencing GitHub example https://github.com/auth0-samples/auth0-golang-api-samples/tree/master/01-Authorization-RS256
Server .env
AUTH0_DOMAIN=your-domain
AUTH0_AUDIENCE=auth0-audience
Client .env
AUTH0_DOMAIN=your-domain
AUTH0_AUDIENCE=auth0-audience
CLIENT_ID=auth0-clientID
CLIENT_SECRET=auth0-clientSecret