Using empty interface.go

package main

import (
	"encoding/json"
	"log"
)

func main() {

	testData := []byte(`{
  "user":"test",
  "email":"[email protected]"
}`)

	var user User
  // Here we pass our User into unmarshal, it takes an empty interface, so it doesn't matter what type it is
	err := json.Unmarshal(testData, &user)
	if err != nil {
		log.Fatal(err)
	}

	log.Println("Found user, ", user)
}

type User struct {
	User  string
	Email string
}