curl --request POST \
  --url 'http://localhost:8000/api/v1/conversations' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "message": "string",
  "messages": [
    {
      "role": "system",
      "content": "string"
    }
  ],
  "conversation_id": "string",
  "model": "string",
  "temperature": 1,
  "max_tokens": 1
}'

{
  "conversation_id": "string",
  "response": "string",
  "tokens_used": 1,
  "processing_time_ms": 1
}