{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948944,-0.315445,0.000000,0.000000,0.176022,-0.529522,0.829833,0.000000,-0.261218,0.785812,0.560593,0.000000,-1667836.488160,5017297.852858,3555345.945078,1],    "boundingVolume": {    "region": [1.891675,0.595007,1.891770,0.595197,0.000000,8.807851]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1075173.b3dm"}}}