Anggap bahawa URL dicetak

{"message":"123。"}

Bagaimana saya boleh mencetak teks 123 ini menggunakan php?

$request = file_get_contents('php://input');
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, "https://xxx.xxx.com/xxx/list");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type: application/json; charset=utf-8"));
    curl_setopt($ch, CURLOPT_POSTFIELDS, $request);
    $data = curl_exec($ch);
    curl_close($ch);

    echo $data['message'];

Saya menulis begini tetapi tiada apa-apa?