{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.857978,-0.513686,0.000000,0.000000,0.262906,-0.439116,0.859103,0.000000,-0.440529,0.735789,0.514343,0.000000,-2812248.246769,4697124.613822,3261475.467790,1],    "boundingVolume": {    "region": [2.110190,0.540178,2.110354,0.540303,0.000000,16.055300]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/6_380473.b3dm"}}}