{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949078,-0.315041,0.000000,0.000000,0.176101,-0.530514,0.829182,0.000000,-0.260677,0.785301,0.561560,0.000000,-1664388.656803,5014054.101772,3561491.008986,1],    "boundingVolume": {    "region": [1.891228,0.596217,1.891365,0.596323,0.000000,8.768397]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447222.b3dm"}}}