curl --request POST \
  --url https://api.trycardinal.ai/extract \
  --header 'Content-Type: multipart/form-data' \
  --header 'x-api-key: <api-key>' \
  --form 'fileUrl=<string>' \
  --form 'schema=<string>' \
  --form fast=false \
  --form 'customContext=<string>' \
  --form imageMetadataDetect=false \
  --form file=@example-file

{
  "response": "<string>",
  "method": "fast",
  "pages_processed": 123,
  "confidence_score": 123,
  "image_metadata": [
    {
      "figure_id": 123,
      "caption": "<string>",
      "cropped_image_url": "<string>",
      "metadata": {},
      "bounding_box": {
        "original": {
          "x": 123,
          "y": 123,
          "w": 123,
          "h": 123
        },
        "pixel": {
          "x": 123,
          "y": 123,
          "w": 123,
          "h": 123
        }
      },
      "subfigure_count": 123,
      "processing_times": {
        "detection_ms": 123,
        "crop_ms": 123,
        "ocr_ms": 123,
        "total_ms": 123
      }
    }
  ]
}