Zoho Analytics: Send rows to data tables via Rest API

Hello, I have a fairly basic system which can collect data inputs, and would like to use REST API to send this to an analytics workspace on Zoho.

I'm tying myself in knots trying to figure out what exactly I need to do to obtain the access tokens etc, and what the payload should be sending (i.e. in terms of org id/tokens and so on) (I know what columns etc to send, and how to map those).

Best way to accomplish this? It's really as simple as new rows being appended from my above source.