{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950648,-0.310273,0.000000,0.000000,0.173511,-0.531623,0.829018,0.000000,-0.256680,0.786443,0.561804,0.000000,-1638870.244472,5021346.300235,3563040.499130,1],    "boundingVolume": {    "region": [1.886228,0.596515,1.886325,0.596614,0.000000,11.649337]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/6_1391127.b3dm"}}}