'your access token',
'refresh_token' => 'your refresh token');
$wrap = new CS_REST_Clients('Your client ID', $auth);
$result = $wrap->unsuppress('Email address to unsuppress');
echo "Result of PUT /api/v3.1/clients/{id}/unsuppress\n
";
if($result->was_successful()) {
echo "Updated with Code ".$result->http_status_code;
} else {
echo 'Failed with code '.$result->http_status_code."\n
";
var_dump($result->response);
echo '';
}