{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949536,-0.313658,0.000000,0.000000,0.175138,-0.530196,0.829590,0.000000,-0.259661,0.786070,0.560955,0.000000,-1657898.095619,5018948.533197,3557648.134375,1],    "boundingVolume": {    "region": [1.889758,0.595407,1.889920,0.595672,0.000000,8.792672]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1367043.b3dm"}}}