get_subscriptions.php

<?php

// Information obtained from authentication

$userId = '';
$token = '';

$url = 'https://api.smartproxy.com/v1/users/' . $userId . '/subscriptions';

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");

$headers = array();
$headers[] = "Accept: application/json";
$headers[] = "Authorization: Token $token";
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$result = curl_exec($ch);
if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);
echo $result;