<?php
define(SITE_ROOT_URL, "http://w...content-available-to-author-only...e.com/");
$array = array('hits' => array ( 0 => array ( 'ID' => '69', 'Title' => 'This is an example', 'URL' => 'example/1', 'Detail' => 'Some description here...', 'image' => 'image1.png', 'objectID' => '75877631') ));
 
$messages = array();
foreach ($array['hits'] as $key => $value) {
    $messages[] = array(
        'title' => $value['Title'],
        'image_url' => $value['image'],
        'subtitle' => substr($value['Detail'], 0, 120),
        'buttons' => array(
            array(
                'type' => 'web_url', 
                'url' => SITE_ROOT_URL.$value['URL'].'?utm_source=chatbot', 
                'title' => "Leia mais"
            )
        )
    );
}
$result = array(
    'messages' => array(
        'attachment' => array(
            'type' => 'template',
            'payload' => array(
                'template_type' => 'generic',
                'elements' => $messages
            )
        )
    )
);
echo json_encode($result, JSON_PRETTY_PRINT);

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