curl --request GET \
  --url https://controller.platform.simplecloud.app/v0/players/properties \
  --header 'X-Network-ID: <x-network-id>' \
  --header 'X-Network-Secret: <x-network-secret>'

{
  "player_id": "069a79f4-44e9-4726-a5be-fca90e38aaf5",
  "properties": {}
}