Encode/decode directly into golang http

json_decoding_encoding.go

var subscription Subscription
err := json.NewDecoder(r.Body).Decode(&subscription)
if err != nil {
    http.Error(w, err.Error(), http.StatusBadRequest)
    return
}
defer r.Body.Close()

json_encoding_decoding.go

w.Header().Set("Content-Type", "application/json")
subscription, _ := getSubscription()
err = json.NewEncoder(w).Encode(subscription)
if err != nil {
	http.Error(w, err.Error(), http.StatusInternalServerError)
	return
}