curl --request POST \
  --url https://www.anyfast.ai/kling/v1/general/advanced-custom-elements \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "element_name": "my-character",
  "element_description": "视频系列主角",
  "reference_type": "image_refer",
  "element_image_list": {
    "frontal_image": "https://example.com/frontal.jpg",
    "refer_images": [
      {
        "image_url": "https://example.com/side.jpg"
      }
    ]
  },
  "tag_list": [
    {
      "tag_id": "o_102"
    }
  ]
}
'

{
  "id": "863121016086724692",
  "task_id": "863121016086724692",
  "object": "video",
  "model": "kling-element",
  "status": "",
  "progress": 0,
  "created_at": 1773812605
}