create contact segments with filter criteria in oracle eloqua using rest api

Hello, I am trying to create contact segments with filter criteria in oracle Eloqua using rest api via postman.
Create a contact segment

Method: post

Path: /api/rest/2.0/assets/contact/segment

I am able to create contact segments in Eloqua using rest Api but when trying to add filter criteria or shared list, it is not working as expected.

It is simply creating the filter criteria but not adding the condition, though I am defining condition in my request under criteria. Also wanted to understand how to pass value for the text value condition, suppose, I want to add filter condition of Country =AUS, how can I pass this from rest api request.