first, i use /rest/v1/activities/pagingtoken.json to get Paging Token, and then use /rest/v1/activities/leadchanges.json, try to get changed leads after the token.
i got result, but incorrect.
for example, target lead's update date is "Jan 9, 2018 2:41 PM", and my paging token is by "2018-01-09T00:00:00Z". no target lead in result.
do I have misunderstood anything? how can i get correct result?