{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950729,-0.310023,0.000000,0.000000,0.173000,-0.530530,0.829824,0.000000,-0.256724,0.787282,0.560606,0.000000,-1639148.603741,5026684.375099,3555428.689670,1],    "boundingVolume": {    "region": [1.885955,0.595060,1.886071,0.595175,0.000000,8.723209]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/6_1448384.b3dm"}}}