curl --request GET \
  --url https://api.vzaps.com/instances/{id}/contact/list \
  --header 'Authorization: Bearer <token>'

{
  "code": 200,
  "success": true,
  "data": [
    {
      "jid": "5511999999999@s.whatsapp.net",
      "Name": "Maria Silva",
      "IsInWhatsapp": true
    }
  ]
}