Criar um grupo

curl --request POST \
  --url https://api.wappfy.io/api/instances/{instanceId}/groups \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "My Group",
  "participants": [
    "5581999999999@c.us"
  ]
}
'

{
  "id": "120363XXX@g.us",
  "subject": "Team Chat",
  "participants": [
    {
      "id": "5511999999999@c.us"
    }
  ],
  "creation": 1707350400,
  "description": "<string>",
  "pictureUrl": "<string>"
}