curl -X PUT https://api.img-src.io/api/v1/settings \
  -H "Authorization: Bearer imgsrc_YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "default_quality": 85,
    "default_fit_mode": "cover",
    "delivery_formats": ["webp", "jpeg"]
  }'

{
  "settings": {
    "id": "user_abc123",
    "username": "johndoe",
    "email": "[email protected]",
    "delivery_formats": ["webp", "jpeg"],
    "default_quality": 85,
    "default_fit_mode": "cover",
    "default_max_width": 1920,
    "default_max_height": 1080,
    "theme": "light",
    "language": "en",
    "created_at": 1704067200,
    "updated_at": 1704153600,
    "total_uploads": 150,
    "storage_used_bytes": 104857600
  },
  "message": "Settings updated successfully"
}