{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950043,-0.312120,0.000000,0.000000,0.174287,-0.530500,0.829574,0.000000,-0.258383,0.786474,0.560978,0.000000,-1649739.752996,5021533.430046,3557792.093028,1],    "boundingVolume": {    "region": [1.888138,0.595501,1.888302,0.595632,0.000000,8.648813]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1455967.b3dm"}}}