http://threejs.org/editor >> File >> Import (note: add an Env Map image to the Box & change View >> Dark theme)

threejs-editor-scene-export.json

{
	"metadata": {
		"version": 4.3,
		"type": "Object",
		"generator": "ObjectExporter"
	},
	"geometries": [
		{
			"uuid": "892D4DF7-229E-4DF8-BFFD-083D7AE16140",
			"type": "CylinderGeometry",
			"radiusTop": 20,
			"radiusBottom": 20,
			"height": 100,
			"radialSegments": 8,
			"heightSegments": 1,
			"openEnded": false
		},
		{
			"uuid": "F4094A76-C766-473E-9664-01B8A88FBE14",
			"type": "BoxGeometry",
			"width": 100,
			"height": 100,
			"depth": 100,
			"widthSegments": 1,
			"heightSegments": 1,
			"depthSegments": 1
		}],
	"materials": [
		{
			"uuid": "7BAFC7F5-0F24-47CC-96DD-86B3CC509734",
			"type": "MeshNormalMaterial",
			"opacity": 1,
			"transparent": false,
			"wireframe": false
		},
		{
			"uuid": "E86ECC2A-F519-4074-BEF8-705DA6508E7D",
			"type": "MeshPhongMaterial",
			"color": 16777215,
			"ambient": 16777215,
			"emissive": 16777215,
			"specular": 58367,
			"shininess": 30,
			"blending": 2,
			"side": 1,
			"opacity": 0.84,
			"transparent": true,
			"wireframe": false
		}],
	"object": {
		"uuid": "7F11136B-07A9-44EF-8627-8F032FF8A1F6",
		"type": "Scene",
		"matrix": [1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],
		"children": [
			{
				"uuid": "57E4EE31-F421-4311-9D3F-331C1A7ADAF7",
				"name": "Cylinder 1",
				"type": "Mesh",
				"geometry": "892D4DF7-229E-4DF8-BFFD-083D7AE16140",
				"material": "7BAFC7F5-0F24-47CC-96DD-86B3CC509734",
				"matrix": [1.0577389001846313,0,0,0,0,1,0,0,0,0,1.080452799797058,0,-5.614208698272705,51.0894775390625,0,1]
			},
			{
				"uuid": "BE080A48-9796-42EA-93CD-0C940B818A5C",
				"name": "Cylinder 1",
				"type": "Mesh",
				"geometry": "892D4DF7-229E-4DF8-BFFD-083D7AE16140",
				"material": "7BAFC7F5-0F24-47CC-96DD-86B3CC509734",
				"matrix": [1.0577389001846313,0,0,0,0,1,0,0,0,0,1.080452799797058,0,61.04787826538086,51.0894775390625,0,1]
			},
			{
				"uuid": "C7BCDA88-765A-4DF2-94BB-F2D009ED6246",
				"name": "Cylinder 1",
				"type": "Mesh",
				"geometry": "892D4DF7-229E-4DF8-BFFD-083D7AE16140",
				"material": "7BAFC7F5-0F24-47CC-96DD-86B3CC509734",
				"matrix": [1.0577389001846313,0,0,0,0,1,0,0,0,0,1.080452799797058,0,-7.650944232940674,51.0894775390625,242.87310791015625,1]
			},
			{
				"uuid": "A4884DBB-A6C4-4BD3-B5ED-B0CF3AE29977",
				"name": "Box 2",
				"type": "Mesh",
				"geometry": "F4094A76-C766-473E-9664-01B8A88FBE14",
				"material": "E86ECC2A-F519-4074-BEF8-705DA6508E7D",
				"matrix": [1.9229010343551636,0,0,0,0,1.9646345376968384,0,0,0,0,2.255885124206543,0,-70.93209838867188,52.9005012512207,64.0120620727539,1]
			},
			{
				"uuid": "66C96DF6-EC7E-428E-9D5D-BF3A17FB8180",
				"name": "AmbientLight 1",
				"type": "AmbientLight",
				"color": 2236962,
				"matrix": [1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]
			},
			{
				"uuid": "72F69673-B9BA-4824-BE35-EFB4D9140F35",
				"name": "PointLight 2",
				"type": "PointLight",
				"color": 16777215,
				"intensity": 1,
				"distance": 0,
				"matrix": [1,0,0,0,0,1,0,0,0,0,1,0,21.70244026184082,185.88333129882812,209.7581787109375,1]
			}]
	}
}