CONTEXT

Should you need to extract claims from a JWT token issued by an identity provider, the following code can be used for that purpose.

package main

import (
	"fmt"
	"github.com/golang-jwt/jwt"
)

func main() {
	tokenString := "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c" // typically obtained from and 'Authorization' http header
	token, _, err := new(jwt.Parser).ParseUnverified(tokenString, jwt.MapClaims{})
	if err != nil {
		fmt.Printf("Error %s", err)
	}
	if claims, ok := token.Claims.(jwt.MapClaims); ok {
		// obtains claims
		sub := fmt.Sprint(claims["sub"])
		name := fmt.Sprint(claims["name"])
		// and so on and on
		// ...
		fmt.Printf("sub = %s\r\n", sub)
		fmt.Printf("name = %s", name)

	}
}

Hope it helps!!