Klaviyo send a custom event

add_action( 'admin_notices', function() {

	$email = '[email protected]';
	$url = 'https://a.klaviyo.com/api/events/';
	$args = [
		'headers' => [
			'Authorization' => 'Klaviyo-API-Key pk_####################',
			'content-type' => 'application/json',
			'accept' => 'application/json',
			'revision' => '2024-02-15',
		],
		'body' => [
			'data' => [
				'type' => 'event',
				'attributes' => [
					'properties' => [
						'My Custom Event' => 'Details Here',
					],
					'metric' => [
						'data' => [
							'type' => 'metric',
							'attributes' => [
								'name' => 'My Custom Event',
							]
						]
					],
					'profile' => [
						'data' => [
							'type' => 'profile',
							'attributes' => [
								'email' => strtolower( $email ),
							]
						]
					]
				]
			]
		]
	];
	$args['body'] = json_encode( $args['body'] );
	$response = wp_remote_post( $url, $args );

	wp_admin_notice(
		sprintf(
			'<pre>%d %s</pre>',
			wp_remote_retrieve_response_code( $response ),
			$email
		),
		[ 'type' => 'info' ]
	);

} );