{
"aspect_ratio": "$empty",
"prompt": "Convert this photo into a black and white coloring page for printing. Pure white background, solid black outlines only, no grey, no shading, no hatching, no colour and no text. Keep the subjects recognisable and their pose and composition unchanged. Use thick bold even outlines and large simple shapes suitable for a young child, simplify the background to just a few big elements and leave generous empty areas to colour in.",
"quality": "medium",
"resolution": "1k",
"images": [],
"output_format": "png"
}