{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949081,-0.315032,0.000000,0.000000,0.175827,-0.529705,0.829758,0.000000,-0.260851,0.785854,0.560705,0.000000,-1665497.473959,5017566.511640,3556058.408376,1],    "boundingVolume": {    "region": [1.891218,0.595184,1.891355,0.595291,0.000000,8.820004]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/2_1457855.b3dm"}}}