curl --request GET \
  --url https://api.quintus.tec.br/v1/agents/sessions \
  --header 'X-API-Key: <api-key>'

{
  "items": [
    {
      "id": "<string>",
      "agent_id": "<string>",
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "user": {
        "id": "<string>",
        "reference": "<string>"
      },
      "messages_count": 0,
      "last_message_at": "2023-11-07T05:31:56Z",
      "closed_at": "2023-11-07T05:31:56Z",
      "context": {},
      "metadata": {}
    }
  ],
  "next_offset": 123
}