{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950695,-0.310128,0.000000,0.000000,0.173068,-0.530539,0.829805,0.000000,-0.256805,0.787235,0.560635,0.000000,-1639665.771476,5026385.115123,3555612.065930,1],    "boundingVolume": {    "region": [1.886066,0.595095,1.886182,0.595210,0.000000,8.766509]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_1449822.b3dm"}}}