world-game/site/templates/about.json.php

<?php

$specificData = [
  'intro' => [
    'title' => $page->introTitle()->value(),
    'text' => $page->introText()->value()
  ],
  'mission' => [
    'title' => $page->missionTitle()->value(),
    'text' => $page->missionText()->toBlocks()
  ],
  'manifesto' => [
    'title' => $page->manifestoTitle()->value(),
    'text' => $page->manifestoText()->toBlocks()
  ],
  'team' => [
    'title' => $page->teamTitle()->value(),
    'members' => $page->teamMembers()->toStructure()->map(function($member) {
      return [
        'name' => $member->name()->value(),
        'role' => $member->role()->value(),
        'bio' => $member->bio()->value(),
        'photo' => $member->photo()->toFile()?->url(),
        'linkedin' => $member->linkedin()->value(),
        'twitter' => $member->twitter()->value()
      ];
    })->values()
  ]
];

$pageData = array_merge($genericData, $specificData);

header('Content-Type: application/json');
echo json_encode($pageData);