curl --location --request POST 'https://api.cometapi.com/kling/v1/videos/multi-elements/init-selection' \
--header 'Authorization: {{api-key}}' \
--header 'Content-Type: application/json' \
--data-raw '{
"video_id": "784912347344945152",
"task_id": "784912347277836288"
}'
{}