curl --request POST \
  --url https://api.highwayapi.ai/v3/async/wan-2.5-t2v-preview \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "input": {
    "prompt": "<string>",
    "negative_prompt": "<string>",
    "audio_url": "<string>"
  },
  "parameters": {
    "size": "<string>",
    "duration": 123,
    "prompt_extend": true,
    "audio": true,
    "seed": 123
  }
}
'

{
  "task_id": "<string>"
}