Help for Aimeos

Hello,
I need to introduce, modify, eliminate, products to the aimeos but from its api. But I can not access the JsonApi of aimeos as admin, how can I do it? I have to login to the api as admin? I have to activate it? That I have to do?. I'm trying to access from postman, to make the GET, POST and more requests. But I can not and I do not know how to do it. The aimeos I have installed in laravel. Apart from that, if I can access the api as a client, but not as admin.
Greetings thank you.

You have to log in into your Laravel application with your admin account. Laravel offers the Passport package to do that for clients using the API: https://laravel.com/docs/5.6/passport

Thanks, but I still can not access the api as administrator.

I have never done this could you please help me ?? I have no idea how to do it. Thank you.