package main

import (
    "encoding/json"
    "fmt"
)

type Test struct {
	Name string `json:"name"`
	Age  int32  `json:"age"`
}

func main() {
	t := Test {
		Name: "hatter",
		Age: 18,
	}
	s, err := json.Marshal(t)
	if err != nil {
		fmt.Println("ERROR: ", err)
		return
	}
	fmt.Println("JSON: ", string(s))
}