curl --request POST \
  --url https://api.example.com/v1/conversations/{conversation_id}/chat \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "content": "<string>",
  "tool": "web_research",
  "kb_id": "<string>",
  "files": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "name": "<string>",
      "size": 123,
      "type": "<string>",
      "status": "pending",
      "url": "<string>"
    }
  ],
  "model_selection": [
    "<string>"
  ]
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "parts": [
    {}
  ]
}