{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949078,-0.315041,0.000000,0.000000,0.176101,-0.530512,0.829184,0.000000,-0.260677,0.785303,0.561558,0.000000,-1664390.666386,5014062.703786,3561478.046806,1],    "boundingVolume": {    "region": [1.891228,0.596214,1.891365,0.596321,0.000000,8.768397]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447168.b3dm"}}}