users and contacts to look up WhatsApp profiles and manage instance contacts.
For instances, see Instances and billing.
Contacts
contacts()->list($instanceId, $instanceToken = null)
{ code, success, data } with contact array (jid, Name, IsInWhatsapp, etc.).
contacts()->add($request)
{ code, success, data } with confirmation text (e.g. "Contact added").
Users
users()->info($request)
{ code, success, data } with user profile fields (VerifiedName, Status, PictureId, etc.).
users()->check($request)
{ code, success, data.users[] } with phone, exists, jid per checked number.
users()->avatar($request)
{ code, success, data } with avatar base64 and mimetype.
users()->contacts($instanceId, $instanceToken = null)
{ code, success, data } — JID map to contact fields (FirstName, FullName, PushName, etc.).
