{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950364,-0.311141,0.000000,0.000000,0.173617,-0.530304,0.829840,0.000000,-0.257655,0.786995,0.560582,0.000000,-1645091.799331,5024850.246255,3555277.393443,1],    "boundingVolume": {    "region": [1.887140,0.595031,1.887239,0.595147,0.000000,8.707083]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1452989.b3dm"}}}