curl --request POST \
  --url https://identity.xmsmartlink.com/api/overseas/r18/check \
  --header 'Content-Type: application/json' \
  --header 'X-Access-Token: <api-key>' \
  --data '
{
  "image_url": "https://example.com/a.jpg"
}
'

{
  "code": 123,
  "track_id": "<string>",
  "data": {
    "passed": true,
    "risk": "<string>",
    "items": [
      {}
    ]
  },
  "message": "<string>"
}