curl --request POST \
  --url https://api.l2msg.com/whatsapp/chat/archiveChat/{instance} \
  --header 'Content-Type: application/json' \
  --header 'apikey: <api-key>' \
  --data '
{
  "lastMessage": {
    "key": {
      "remoteJid": "<string>",
      "fromMe": true,
      "id": "<string>"
    }
  },
  "archive": true,
  "chat": "<string>"
}
'

{
  "chatId": "553198296801@s.whatsapp.net",
  "archived": true
}