Update asset (UpdateAsset)

https://api.gravitex.ai/api/v3/seedance?Action=UpdateAsset&Version=2024-01-01

curl -X POST "https://api.gravitex.ai/api/v3/seedance?Action=UpdateAsset&Version=2024-01-01" \
  -H "Authorization: Bearer sk-your_token_key" \
  -H "Content-Type: application/json" \
  -d '{"Id": "asset-20260710-xyz", "Name": "portrait-v2.jpg"}'

{
  "ResponseMetadata": {"Action": "UpdateAsset"},
  "Result": {"Id": "asset-20260710-xyz"}
}