curl --request DELETE \
  --url https://controller.platform.simplecloud.app/v0/persistent-servers/properties \
  --header 'Content-Type: application/json' \
  --header 'X-Network-ID: <x-network-id>' \
  --header 'X-Network-Secret: <x-network-secret>' \
  --data '{}'

{
  "deleted_keys": [
    "key1",
    "key2"
  ],
  "message": "Properties deleted successfully",
  "properties": {}
}