legend-doughnut-top-center-single.json

{
	"config": {
		"type": "doughnut",
		"data": {
			"labels": [""],
			"datasets": [{
				"data": [10],
				"backgroundColor": "#00ff00",
				"borderWidth": 0
			}]
		},
		"options": {
			"legend": {
				"position": "top",
				"align": "center"
			}
		}
	},
	"options": {
		"canvas": {
			"height": 256,
			"width": 512
		}
	}
}