function get_info_user (data, next){
            var i = 0;

            for (const key in data) {
                if (data.hasOwnProperty(key)) {
                    const element = data[key];
                    for (const key in element) {
                        if (element.hasOwnProperty(key)) {
                            const ids = element[key];

                            User.findById(ids).exec().then((user_data) => {

                                data.users =
                                {
                                    name: user_data.name,
                                    surname: user_data.surname,
                                    city: user_data.city,
                                    codice_fiscale: user_data.cod_fiscale,
                                    email: user_data.email,
                                    phone: user_data.phone,
                                    trattamento_dati_abroad : user_data.personal_data_abroad,
                                    trattamento_dati_ads : user_data.personal_data_ads,
                                    trattamento_dati_local : user_data.personal_data_local
                                }
                            })

                        }

                    }
                }
            }

            next()
        }