Create smart campaign and flow steps using REST API

Hello,

Our integration currently creates a program on Marketo and add members with specific statuses.

We need to create using the REST API a smart campaign and add some flow steps for this smart campaign, and at a scheduled time, trigger the campaign to run.

Requests:

1. Create a program (ok)
2. Create a smart campaign
3. Add flow steps

Here is a screenshot demonstrating the flow steps:

Thanks!