curl --request GET \
  --url https://api.open.cx/chat/sessions/{session_id}/history \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "created_at": "2023-11-07T05:31:56Z",
      "event": {
        "type": "<string>",
        "sender": {
          "type": "<string>",
          "name": "<string>"
        },
        "content": {
          "type": "<string>",
          "text": "<string>"
        },
        "attachments": [
          {
            "id": "<string>",
            "name": "<string>",
            "size": 123,
            "type": "<string>",
            "url": "<string>"
          }
        ],
        "context": {}
      }
    }
  ],
  "next": "<string>"
}