You need to gather a SAML trace using either Google Chrome, Mozilla Firefox or Microsoft Edge.
Chrome
SAML Chrome Panel
To get SAML Chrome Panel:
To obtain a SAML Trace with Chrome Panel:
Firefox or Chrome/Microsoft Edge
SAML Tracer
If using the extension is not an options. The SAML session can be gathered from Browser diagnostic while reviewing session state.
The saml response can then be checked using this site SAMLTOOL .
*****This is a public site so do not use if there concern about sending sensitive data to online forum.