{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949298,-0.314378,0.000000,0.000000,0.175568,-0.530145,0.829531,0.000000,-0.260238,0.785817,0.561042,0.000000,-1661585.543612,5017336.173133,3558198.356230,1],    "boundingVolume": {    "region": [1.890529,0.595591,1.890666,0.595697,0.000000,6.295221]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/6_1366168.b3dm"}}}