https://github.com/italia/spid-php/blob/e7119cbb5334d2823755974db2a40d15e48f8679/lib/ResponseHandler.php#L24 https://github.com/italia/spid-php/blob/e7119cbb5334d2823755974db2a40d15e48f8679/lib/ResponseHandler.php#L25 must be - **spid-sp** for SPID - **cie-sp** for CIE
