{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950857,-0.309629,0.000000,0.000000,0.172788,-0.530625,0.829808,0.000000,-0.256394,0.787373,0.560630,0.000000,-1637036.128848,5027263.237155,3555582.484764,1],    "boundingVolume": {    "region": [1.885527,0.595037,1.885672,0.595257,0.000000,8.808238]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/9_1448407.b3dm"}}}