How can I get the user ID with the user name with instagram API without user authentication? If I try users/search, it returns multiple research results, so how can I be sure that I get the result of exact user name only? For example, following requests return multiple users having their usernames similiar to aliciakeys, I want to get only the data of the user with exact user name. https://api.instagram.com/v1/users/search?q=aliciakeys&access_token=232967857.f59def8.c44c9e739efb4c52ab858bc84f420d00