{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950558,-0.310547,0.000000,0.000000,0.173694,-0.531662,0.828955,0.000000,-0.256887,0.786308,0.561898,0.000000,-1640192.609758,5020488.466304,3563636.775383,1],    "boundingVolume": {    "region": [1.886516,0.596629,1.886614,0.596727,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394471.b3dm"}}}