The https uri to redirect to after the sharing request is used. This can contain query parameters, e.g. for passing state.
This is optional and can be used to redirect the user to a specific page after they have successfully connected their accounts. If not provided, the user will be told that they can close the page.
If the user cancels the flow without adding any statements, they will be redirected to this uri with the query parameters applicationId={applicationId}&sharingRequestId={sharingRequestId}&action=cancelled.
If the user adds any statements, they will be redirected to this uri with the query parameters applicationId={applicationId}&sharingRequestId={sharingRequestId}&action=submitted.