{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950360,-0.311152,0.000000,0.000000,0.173791,-0.530815,0.829477,0.000000,-0.257551,0.786644,0.561123,0.000000,-1644428.128263,5022620.060847,3558710.947029,1],    "boundingVolume": {    "region": [1.887152,0.595683,1.887251,0.595800,0.000000,8.817695]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428798.b3dm"}}}