{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950271,-0.311424,0.000000,0.000000,0.173789,-0.530295,0.829810,0.000000,-0.257880,0.786889,0.560627,0.000000,-1646527.434584,5024176.002087,3555563.746304,1],    "boundingVolume": {    "region": [1.887437,0.595085,1.887537,0.595202,0.000000,8.815450]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1453640.b3dm"}}}