curl --request POST \
  --url https://api.highwayapi.ai/v3/async/wan-i2v \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "prompt": "<string>",
  "image_url": "<string>",
  "negative_prompt": "<string>",
  "width": 123,
  "height": 123,
  "loras": [
    {
      "path": "<string>",
      "scale": 123
    }
  ],
  "seed": 123,
  "steps": 123,
  "guidance_scale": 123,
  "flow_shift": 123,
  "enable_safety_checker": true,
  "fast_mode": true
}
'

{
  "task_id": "<string>"
}