request for API calls to return for a study-id the date/time of creation and date/time of last modification.

I can scrape the study page html and found the date/time of creation but I cannot find the date/time of last modification of a study.
Also I'd much rather have API calls for this than parsing through html. :-)

Start by locating the API endpoint that returns study data for a study-id and inspect how the creation date is currently exposed. Determine how the last-modification date is represented, then verify that both timestamps are returned consistently in the API response; the issue names no file or test.

Written by the indexing model from the issue text.