curl --request POST \
  --url https://api.openxswitch.com/v1/sub-wallet/freeze \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "subWalletId": "<string>"
}
'

{
  "success": true,
  "data": {
    "walletId": "63e1b8c2f18e310bb11f8a9c"
  }
}