ChatSendMessageRequestDto

{
    "conversationId": "ee6e55e8-45fe-4a3e-9bc8-4669f9fdf77a",
    "senderUserId": "2b0414b9-b88f-4722-84b0-333eb47e9180",
    "kind": "string",
    "body": "string",
    "metadata": {
        "property1": "string",
        "property2": "string"
    }
}