I think this may be missing from the V2 contact. I am not seeing an option to add “assistant_details” or something to the request and it doesn’t show up when I request a contact with all optional properties.
Thanks for bringing this up! You’re right, those fields are currently missing from the V2 Contacts endpoints and that is listed in the public tracker. The team is reviewing them as part of the ongoing effort to close the remaining gaps. We’ll share updates as progress is made.