I got thru the below API that retrieves users from a JIRA Project but limits it to 100 even when the maxResults is set to "250".
I used the below API:
/rest/api/2/user/assignable/multiProjectSearch
and am passing the below parameters
projectKeys=RPSO&startAt=0&maxResults=250
Appreciate if you can please help me in getting all the users. Also is there a way I can retrieve last login time for each of the user?