dbtcloud API steps over_ride example

I’m trying to set a variable value in the steps_override part of the dbt job trigger API (dbt Developer Hub) but I don’t see a great example of the format in which these over_ride parameters need to be provided.

Can someone provide an example of how to pass steps_override commands, perhaps using the following command as an example: dbt run --select model --vars ‘{“airflow_ds”: '2024-07-30'}’