{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948729,-0.316092,0.000000,0.000000,0.176513,-0.529793,0.829555,0.000000,-0.261664,0.785368,0.561006,0.000000,-1670692.720100,5014472.634919,3557972.065192,1],    "boundingVolume": {    "region": [1.892356,0.595489,1.892452,0.595713,0.000000,8.520594]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1070769.b3dm"}}}