{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950424,-0.310956,0.000000,0.000000,0.173463,-0.530182,0.829951,0.000000,-0.257537,0.787150,0.560419,0.000000,-1644335.154789,5025839.494984,3554235.999080,1],    "boundingVolume": {    "region": [1.886904,0.594818,1.887087,0.594964,0.000000,8.769104]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/13_1449103.b3dm"}}}