{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949074,-0.315053,0.000000,0.000000,0.176109,-0.530514,0.829181,0.000000,-0.260685,0.785296,0.561563,0.000000,-1664445.334577,5014022.434914,3561508.982307,1],    "boundingVolume": {    "region": [1.891240,0.596220,1.891377,0.596327,0.000000,8.793916]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447300.b3dm"}}}