{"columns":{"country":"str","iso_code":"str","percentage":"float","unit_of_measure":"str","year":"int"},"table":"diet_percentage","usage":{"base_url":"/diet_percentage","example":"/diet_percentage?limit=5&offset=0","parameters":{"<column_name>":"Filter by column value","limit":"Number of results (default: 10, max: 100)","offset":"Skip N results (max: 10000)"},"rate_limits":"50 requests/hour, 200 requests/day per IP"}}