Disable signature at SSO

Hello, thanks for this useful tool,
I have a question about SSO, specifically I want to disable the check of the signature in SAML response. How can this be made? I am testing the connection between Nextcloud as Service Provider and a CMS as Indentity Provider, and the error message is “No Signature found. SAML Response rejected”, so for testing purposes I need to verify that the only issue related with a succesful SSO connection is to disable the check SAML signature, or for to know if there will arise more issues related.
Thanks in advance.