{ "id" : "test-model", "type" : "ClutterListModel", "columns" : [ [ "text-column", "gchararray" ], [ "int-column", "gint" ], [ "actor-column", "ClutterActor" ] ], "rows" : [ [ "text-row-1", 1, null ], [ "text-row-2", 2, { "type" : "ClutterActor", "background-color" : "blue" } ], { "int-column" : 3, "actor-column" : { "type" : "ClutterActor", "name" : "actor-row-3" } } ] }