How to create a new Quotation in ERP Next, from an external JSON file, through a python file

Basically, when I run the python file in my cmd, it should create a new Quotation in my ERP Next instance.

The quotation should be populated with data from the JSON file. So I would also like to know what the structure of the JSON file should be like exactly.

I am currently able to run a GET request successfully for the list of Quotations, or a specific Quotation. The response data is shown in my CMD.

I want to figure out how to POST a new Quotation.