ProxyRequest(ProxyRequest)

{
    "model": "string",
    "messages": [
        {
            "role": "string",
            "content": "string"
        }
    ],
    "max_tokens": 0,
    "temperature": 0,
    "top_p": 0,
    "frequency_penalty": 0,
    "presence_penalty": 0,
    "stream": true,
    "provider": "string",
    "portkey_provider": "string",
    "portkey_virtual_key": "string"
}