How to get information about to whom a token belongs to?

How to get information about to whom a token belongs to?

Zoho doesn't share any user information in /oauth/v2/token/response.

To get information about a user you need to make a GET request to the api  https://profile.zoho.com/api/v1/user/self/profile with the header name Authorization  and header value as Zoho-oauthtoken<space><access token value you got>.

While generating tokens include the scope zohoprofile.userinfo.read in the scope parameter for /oauth/v2/auth.

For detailed information, please refer to our OAuth documentation