{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950047,-0.312107,0.000000,0.000000,0.174281,-0.530508,0.829571,0.000000,-0.258370,0.786475,0.560983,0.000000,-1649659.798251,5021536.739350,3557824.279076,1],    "boundingVolume": {    "region": [1.888124,0.595507,1.888288,0.595639,0.000000,8.648813]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1456038.b3dm"}}}