how to add in SOAP UI a bearer token rest call with json body to AUTH?

Hello! I am having a problem of converting a get token rest call from postman -into SOAP UI auth for test cases. I am not sure which auth to use in this case in SOAP UI, the json body in postman call is confusing me for SOAP UI. It is working as a call in SOAP UI, but i need to set this as a general token for the whole project in SOAP UI - all the other auths are asking for a client secret key and user, which it doesn't really have (it might be that json body - but i do not know how to put this into auth in soap ui). I am not sure if i should be using JWT auth - since in the response it is giving JWT error for the call