{
  "services": {
    "set_all_zones": {
      "name": "Set all zones",
      "description": "Sets all Blackbird zones to a single source.",
      "fields": {
        "entity_id": {
          "name": "Entity",
          "description": "Name of any blackbird zone."
        },
        "source": {
          "name": "Source",
          "description": "Name of source to switch to."
        }
      }
    }
  }
}