{
  "event": "AiSessionMessageCreated",
  "channel": "private.AiInterface.ai_interface_background_remover",
  "data": {
    "id": 1234,
    "ai_session_id": 567,
    "message": "Background removal process completed successfully",
    "type": "completion",
    "metadata": {
      "processing_time": 2.3,
      "input_image": "/dev-assets/images/product-placeholder.jpg",
      "output_image": "/dev-assets/images/background-placeholder.jpg",
      "confidence": 0.95
    },
    "created_at": "2024-01-15T10:30:00Z",
    "updated_at": "2024-01-15T10:30:00Z"
  }
}