{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948970,-0.315365,0.000000,0.000000,0.175997,-0.529596,0.829791,0.000000,-0.261138,0.785794,0.560656,0.000000,-1667328.838497,5017183.243248,3555743.086841,1],    "boundingVolume": {    "region": [1.891591,0.595082,1.891685,0.595273,0.000000,8.584053]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1073983.b3dm"}}}