{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949018,-0.315221,0.000000,0.000000,0.175981,-0.529816,0.829654,0.000000,-0.260975,0.785703,0.560859,0.000000,-1666288.347749,5016604.522874,3557038.397615,1],    "boundingVolume": {    "region": [1.891417,0.595370,1.891554,0.595477,0.000000,7.718642]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/3_1072302.b3dm"}}}