{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950695,-0.310128,0.000000,0.000000,0.173074,-0.530557,0.829792,0.000000,-0.256802,0.787222,0.560655,0.000000,-1639642.065466,5026303.589446,3555737.398646,1],    "boundingVolume": {    "region": [1.886067,0.595119,1.886182,0.595234,0.000000,8.811263]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_1449900.b3dm"}}}