I have try to add subscriber Using API (Version 1.1) and for this required Access Token. Access Token generate from Authorization code. But now Issue is Authorization Code get from Web URL(I am follow this Document: https://www.zoho.com/accounts/protocol/oauth/web-apps/authorization.html) and I required using API.

How I can get the Authorization code using API because I am add Subscriber using PHP Curl so I need Authorization code in API.

Thanks in advance.