{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949083,-0.315025,0.000000,0.000000,0.176029,-0.530326,0.829318,0.000000,-0.260706,0.785435,0.561359,0.000000,-1664577.048535,5014903.410229,3560215.526903,1],    "boundingVolume": {    "region": [1.891211,0.595974,1.891348,0.596081,0.000000,13.117660]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1373641.b3dm"}}}