Hello everyone!
I am working to integrate SSO for our JIRA Cloud with ADFS. I understand this won't be supported by Atlassian but I can't even get the setup as I do not know where to get our unique Entity ID to complete the URLs for JIRA as the SP? I mean these:
SAML Assertion (SP Identifier):
https://auth.atlassian.com/saml/<unique Entity ID>
Login/logout redirect URL:
https://auth.atlassian.com/login/callback?connection=saml-<unique Entity ID>
Where the <unique Entity ID> should be dynamically created for our subscription. I raised a support case but so far the response I received is to contact our IdP to get these... given that we own and manage our IdP (ADFS), I already know the required endpoints. 
The Azure SSO integration (at: here) suggests that the <unique Entity ID> might be generated at the moment when the SSO configuration is initiated in Atlassian Access but I would like to be certain, as the entire process will cause downtime for our production teams.
Anyone knows where/how I can get the <unique Entity ID> ? Thanks!