Creating model with script and update it via REST API

Hi all!

I need help with the following task:

I want to create model with script(because it's not possible with Aris repository) and than to update the model with REST API calls(PUT method). The update is for creating model objects and connections. 

In between I suppose I need to use token creating for connecting to the repository.

Can someone please help me with the whole script? How do I make connection with the Aris script to call methods in the Aris repository?

Thank you in advance