curl --request POST \
  --url https://us.cybedefend.com/project/{projectId}/security-champion/{conversationId}/messages \
  --header 'Authorization: Bearer <token>'

{
  "messages": [
    {
      "role": "user",
      "content": "<string>",
      "createdAt": "2023-11-07T05:31:56Z"
    }
  ],
  "total": 123
}