post https://a.klaviyo.com/api/lists//relationships//
Add a profile to a list with the given list ID.
It is recommended that you use the Subscribe Profiles endpoint if you're trying to give a profile consent to receive email marketing.
This endpoint accepts a maximum of 1000 profiles per call.
Rate limits:
Burst: 10/s
Steady: 150/m
Scopes:
List Write
Profiles Write