{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949070,-0.315066,0.000000,0.000000,0.176048,-0.530306,0.829327,0.000000,-0.260743,0.785432,0.561346,0.000000,-1664808.996474,5014887.097178,3560130.621851,1],    "boundingVolume": {    "region": [1.891254,0.595958,1.891391,0.596065,0.000000,28.770337]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1373735.b3dm"}}}