ChatStreamProxyDto

{
    "messages": [
        {
            "role": "string",
            "content": null,
            "property1": "string",
            "property2": "string"
        }
    ],
    "model": "string",
    "billingGroupId": "string",
    "source": "ai_chat",
    "property1": "string",
    "property2": "string"
}