public function prepareSignature($sessionCode, $certificateId, $certificateHex)
{
try {
$result = $this->soap->prepareSignature($sessionCode, $certificateHex, $certificateId);
if ($result['Status'] === 'OK') {
return $result;
} else {
throw new SigningException($result['Status']);
}
} catch (\SoapFault $e) {
$this->catchSoapError($e);
}
}