curl --request POST \
  --url https://api.highwayapi.ai/v3/async/mj-inpaint \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "image_no": 123,
  "task_id": "<string>",
  "remix_prompt": "<string>",
  "mask": {
    "url": "<string>",
    "areas": [
      {
        "points": [
          {}
        ],
        "width": 123,
        "height": 123
      }
    ]
  },
  "area": {
    "points": [
      {}
    ],
    "width": 123,
    "height": 123
  }
}
'

{
  "task_id": "<string>"
}