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

actionhttps://login.microsoftonline.com/16369150-cf1d-42d5-be1b-e44a19cf731c/saml2
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
RelayState_ef4b0e17-defa-4a69-a0ad-0ec933849dc7