URL for Generating Token to do Management API calls in Apigee Hybrid, from Postman or in automation

[chaitanya_VSK]

Hello,

My requirement is to obtain token which i can use in calling management APIs, i have gone through many blogs and posts especially from @ dchiesa1 , but i was not able to come up with proper understanding, 

This might be because of the way i used in Apigee SaaS , EDGE is a 1 step process by directly calling 1 URL we can get edge API token.  For that obviously the is a one time activity we do. 

But here in Hybrid, is the same not possible, please help me understand. and please share me blog which has step by step process if its already there. 

If the self signed JWT is the only process, i have doubt of what i need to use in private key, and additional claim , subj, issuer, aud. 

This process i wanted because i need to automate in postman itself as a one stop.

Thanks