curl --location --request POST 'https://api.302.ai/302/gpt-image-creative/generate/generate_vintage_propaganda_poster?run_async=' \
--header 'Authorization: Bearer ' \
--header 'Content-Type: application/json' \
--data-raw '{
"height": 1024,
"width": 1024,
"output_format": "png",
"model": "claude-3-7-sonnet-20250219",
"image_model": "flux-kontext-pro",
"lang": "zh",
"subject": "string",
"theme": "string",
"emphasize_content": "string",
"lower_left_content": "string",
"lower_right_content": "string"
}'