{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950033,-0.312151,0.000000,0.000000,0.174304,-0.530496,0.829573,0.000000,-0.258408,0.786465,0.560979,0.000000,-1649897.679640,5021475.871872,3557800.043923,1],    "boundingVolume": {    "region": [1.888170,0.595503,1.888334,0.595634,0.000000,8.563819]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1354242.b3dm"}}}