Official oracle blog links article Working with JMeter for Load Testing Oracle ADF UI Application by Ardhendu Samajdwer as the resource for JMeter testing of Oracle ADF 12c.
The article describes:
how to set-up Apache JMeter™ 4.0
how to create test plan from template Building a Web Test Plan
As per How do JSON Web Tokens work? article:
Whenever the user wants to access a protected route or resource, the user agent should send the JWT, typically in the Authorization header using the Bearer schema. The content of the header should look like the following:
Authorization: Bearer <token>
So you should design your test plan as follows: