{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949360,-0.314191,0.000000,0.000000,0.175424,-0.530062,0.829615,0.000000,-0.260110,0.785948,0.560918,0.000000,-1660766.935792,5018168.937662,3557411.386520,1],    "boundingVolume": {    "region": [1.890320,0.595362,1.890482,0.595627,0.000000,8.820135]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/14_1457491.b3dm"}}}