SAML Oturum SimpleSAML_Session Nesnesi

          $data =
          (
           [trackid:SimpleSAML_Session:private] => 3eb
           [idp:SimpleSAML_Session:private] => https://abs.com
           [authenticated:SimpleSAML_Session:private] => 1
           [attributes:SimpleSAML_Session:private] => Array
          (
               [firstName] => Array
              (
                [0] => Aravind
              )

             [lastName] => Array
              (
                [0] => M
              )

             [email] => Array
            (
                [0] => aravind.muthu@abc.com
            )

    )

Here i need to take email value . How do i have parse the SAMLobj. Thanks in advance