Create verification session

Liveness verification produces digital-human assets. No fields are required — send {}. Whether the capability is available depends on the upstream account behind your key. The session is bound to a channel, so subsequent polling must use the same key.

curl -X POST "https://jiniu.ai/api/material?Action=CreateVisualValidateSession" \  -H "Content-Type: application/json" \  -d '{}'

{
  "ResponseMetadata": {
    "RequestId": "…",
    "Action": "CreateVisualValidateSession"
  },
  "Result": {
    "BytedToken": "xxxxxxxx",
    "H5Link": "https://…"
  }
}