RequestDisplayMode

{
  "type": "object",
  "properties": {
    "action": {
      "const": "requestDisplayMode",
      "default": "requestDisplayMode",
      "type": "string"
    },
    "mode": {
      "description": "Display mode to request: inline, fullscreen, or pip",
      "enum": ["inline", "fullscreen", "pip"],
      "type": "string"
    }
  },
  "required": [
    "action",
    "mode"
  ]
}