{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949311,-0.314337,0.000000,0.000000,0.175586,-0.530277,0.829443,0.000000,-0.260176,0.785744,0.561173,0.000000,-1661191.278495,5016871.302298,3559032.201456,1],    "boundingVolume": {    "region": [1.890486,0.595749,1.890623,0.595856,0.000000,8.800059]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/1/7_1444874.b3dm"}}}