Submitting the form will send the following values to the IdP:

actionhttps://saml.grandid.com/simplesaml/saml2/idp/ssos_e969e5f4068c71009137cd6aa608b1cb
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
RelayState_16feac39-61cf-4fd4-9335-649349fad86a