MailGun API cannot able to add bounce email

Question

When I adding bounce email with mailgun api https://api.mailgun.net/v3/domain/bounces/EMAIL_ADDRESS Then it return [error] => not found

Here is demo script

$ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, 'https://api.mailgun.net/v3/DOMAIN/bounces/');
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, array('address' => 'abc@gmail.com'));
        curl_setopt($ch, CURLOPT_USERPWD, 'api' . ':' . 'KEY');

        $result = json_decode(curl_exec($ch),true);
        if (curl_errno($ch)) {
            echo 'Error:' . curl_error($ch);
        }
        curl_close($ch);
        echo '<pre>'; print_r($result); die('end');