{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950041,-0.312125,0.000000,0.000000,0.174289,-0.530499,0.829575,0.000000,-0.258386,0.786474,0.560977,0.000000,-1649762.731832,5021528.750145,3557788.070127,1],    "boundingVolume": {    "region": [1.888143,0.595500,1.888307,0.595632,0.000000,8.648813]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1455952.b3dm"}}}