How to add contacts to contact list in Hubspot.
When you want to add Contacts then map the VIDS to the addContacts and the value for VIDS needs to be like this:
{"vids": [1,51]}
Here is another way of showing what it needs to look like if we are using a SQL query as a source for some sample data columns:
select '1' as ListID, '{"vids": [101]}' as VIDS, '8354852' as portalID