WP Nav Menu Custom WIdget JSON format

Input.json

[
    {"label": "Products", "url": "#"},
    {"label": "Learn", "url": "#"}
]

nav-menu-custom-widget-as-json-format.php

<?php 


class Custom_Nav_Menu_Widget_Column_2 extends WP_Widget {

	public function __construct() {
			parent::__construct(
					'custom_nav_menu_widget_column_2',
					esc_html__('Custom Navigation Menu (Column 2)', 'text_domain'),
					array('description' => esc_html__('Display a custom navigation menu for Column 2.', 'text_domain'))
			);
	}

	public function widget($args, $instance) {
			echo $args['before_widget'];

			// Display the menu
			echo '<ul class="glue-footer__site-links-list glue-no-bullet" id="column-2-content">';
			foreach ($instance['menu_items'] as $item) {
					echo '<li class="glue-footer__site-links-list-item">';
					echo '<a class="glue-footer__link" href="' . esc_url($item['url']) . '" aria-label="' . esc_attr($item['label']) . '">' . esc_html($item['label']) . '</a>';
					echo '</li>';
			}
			echo '</ul>';

			echo $args['after_widget'];
	}

	public function form($instance) {
			$menu_items = isset($instance['menu_items']) ? $instance['menu_items'] : array();
			?>
			<p>
					<label for="<?php echo $this->get_field_id('menu_items'); ?>"><?php esc_html_e('Menu Items:', 'text_domain'); ?></label>
					<textarea class="widefat" rows="4" id="<?php echo $this->get_field_id('menu_items'); ?>" name="<?php echo $this->get_field_name('menu_items'); ?>"><?php echo esc_textarea(json_encode($menu_items)); ?></textarea>
					<small><?php esc_html_e('Enter menu items in JSON format. Example: [{"label": "Products", "url": "#"}, {"label": "Learn", "url": "#"}]', 'text_domain'); ?></small>
			</p>
			<?php
	}

	public function update($new_instance, $old_instance) {
			$instance = array();
			$instance['menu_items'] = json_decode($new_instance['menu_items'], true);
			return $instance;
	}
}

function register_custom_nav_menu_widget_column_2() {
	register_widget('Custom_Nav_Menu_Widget_Column_2');
}

add_action('widgets_init', 'register_custom_nav_menu_widget_column_2');