Invoke worker api with dynamic access token

Summary:

I need to invoke /hcmRestApi/resources/11.13.18.05/workers api via dynamic token instead of basic auth

Content (required):

Usually we invoke rest api using basic auth method. I want to generate a dynamic access token and invoke /hcmRestApi/resources/11.13.18.05/workers api.

I checked the JWT token method(/fscmRestApi/tokenrelay) where the access token can be generated via browser only. Also in JWT we need to add an extension to include header as per ( Doc ID 2728312.1 ). Since I need this for integration build, I dont want to follow browser based method. I am using POSTMAN as of now.

Is there a way to generate the JWT token via POSTMAN and invoke the worker api with the generated token.