{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950542,-0.310596,0.000000,0.000000,0.173328,-0.530448,0.829808,0.000000,-0.257194,0.787112,0.560630,0.000000,-1642148.266678,5025597.799181,3555579.519850,1],    "boundingVolume": {    "region": [1.886525,0.595073,1.886708,0.595219,0.000000,8.805440]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/15_1449807.b3dm"}}}