{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950661,-0.310233,0.000000,0.000000,0.173199,-0.530743,0.829647,0.000000,-0.256843,0.787056,0.560870,0.000000,-1639905.804835,5025244.007036,3557103.939644,1],    "boundingVolume": {    "region": [1.886176,0.595379,1.886292,0.595493,0.000000,8.582423]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/9_1451148.b3dm"}}}