`addListContacts`

Add contacts (by id, ctr_…) to a list. Returns how many were newly added; contacts already on the list are ignored.

HTTP: POST /api/lists/{id}/contacts

Parameters

Field	Type	Required	Description
`contactIds`	array	✓

any

res = mk.addListContacts({
    "id": "lst_1",
    "contactIds": ctr_1,ctr_2,
})