{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950430,-0.310939,0.000000,0.000000,0.173528,-0.530412,0.829790,0.000000,-0.257472,0.787001,0.560658,0.000000,-1643924.537873,5024891.704382,3555755.465629,1],    "boundingVolume": {    "region": [1.886927,0.595121,1.887027,0.595238,0.000000,8.731197]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/7_1449915.b3dm"}}}