{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949042,-0.315150,0.000000,0.000000,0.176088,-0.530271,0.829340,0.000000,-0.260816,0.785422,0.561326,0.000000,-1665279.266167,5014822.823559,3560002.081316,1],    "boundingVolume": {    "region": [1.891342,0.595934,1.891479,0.596040,0.000000,17.099766]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/9_1444974.b3dm"}}}