<script>
	document.addEventListener('om.Form.init', function( evt ) {
		var { Campaign } = evt.detail;
		var input;

		// Only do this for a specific campaign
		if ( '<slug>' !== Campaign.id ) {
			return;
		}

		input = document.createElement('input');
		input.type = 'hidden';
		input.name = 'debugInfo';
		input.value = '';
		input.id = Campaign.ns + '-debugInfo';
		document.querySelector('.' + Campaign.ns + '-FieldsElement--content').appendChild(input);

		document.addEventListener('om.Optin.init', function( evt ) {
			if ( Campaign.id === evt.detail.Campaign.id ) {
				input.value = JSON.stringify( { products_form: jQuery(document.forms.products_form).serialize() } );
			}
		} );
	} );
</script>