{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950442,-0.310901,0.000000,0.000000,0.173540,-0.530523,0.829717,0.000000,-0.257418,0.786941,0.560767,0.000000,-1643578.691759,5024511.376488,3556448.055601,1],    "boundingVolume": {    "region": [1.886888,0.595253,1.886987,0.595370,0.000000,8.525015]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/9_1450469.b3dm"}}}