body('cache.previews.size').isInt().withMessage('Should have a valid previews cache size'),
body('cache.captions.size').isInt().withMessage('Should have a valid captions cache size'),
body('cache.previews.size').isInt().withMessage('Should have a valid previews cache size'),
body('cache.captions.size').isInt().withMessage('Should have a valid captions cache size'),