How to structure the payload for multiple scenes in Avatar IV?

Hello,

I am using the Avatar IV API. My current audio is over 180 seconds, and I am receiving the following error:

"One of your scenes exceeds Avatar IV's max duration limit of 180 seconds per scene. Please split it into shorter scenes."

I would like to split my request into multiple scenes to stay under the limit, but I cannot find the correct JSON structure for the Avatar IV multi-scene payload.

Could you provide a simple JSON example of how to format the request body to include two or more scenes (each with its own audio_url) in a single Avatar IV generation?