{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950366,-0.311135,0.000000,0.000000,0.173614,-0.530306,0.829840,0.000000,-0.257651,0.786996,0.560583,0.000000,-1645061.914101,5024856.113992,3555282.891532,1],    "boundingVolume": {    "region": [1.887134,0.595032,1.887234,0.595148,0.000000,8.707083]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1452997.b3dm"}}}