curl https://api2.ecomailapp.cz/lists/75/subscribers?page=1&per_page=20 \
  -H "key: YOUR_API_KEY" \
  -H "Content-Type: application/json"

$listId = 75;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api2.ecomailapp.cz/lists/{$listId}/subscribers?page=1&per_page=20");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'key: YOUR_API_KEY',
    'Content-Type: application/json',
]);
$response = curl_exec($ch);
curl_close($ch);

{
  "current_page": 1,
  "data": [
    {
      "list_id": 75,
      "email": "some1@contact.com",
      "status": 1,
      "subscribed_at": "2024-05-10T12:29:07.000000Z",
      "unsubscribed_at": null,
      "custom_fields": [],
      "groups": null,
      "source": "app",
      "subscriber": {
        "id": 1158595,
        "name": "Foo",
        "surname": "Bar",
        "email": "some1@contact.com",
        "gender": "male",
        "company": null,
        "city": "City",
        "country": "CZ",
        "phone": null
      }
    }
  ],
  "per_page": 20,
  "total": 2
}