How to create a scheduled process with a daily schedule using ess/rest/scheduler/v1/requests

I am trying to use the rest api ess/rest/scheduler/v1/requests to submit a scheduled process with a daily reoccurring schedule. I am able to submit individual processes but get an error when I try to include the schedule details. It looks like I'm missing some details on the frequency and the schedule, e.g DAILY and every 1 day but the documentation doesn't contain the body details needed and the get api doesn't return them either.

Does anyone know what else is needed in the schedule part of the body (the rest is working ok)?

{
  "description": "Initiates payment processing for invoices.",