curl --request GET \
  --url https://api.wappfy.com.br/api/{session}/presence/{chatId} \
  --header 'apikey: <api-key>'

{
  "id": "11111111111@c.us",
  "presences": [
    {
      "participant": "11111111111@c.us",
      "lastSeen": 1686568773,
      "lastKnownPresence": "offline"
    }
  ]
}