{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950349,-0.311187,0.000000,0.000000,0.173807,-0.530797,0.829485,0.000000,-0.257582,0.786643,0.561110,0.000000,-1644627.351440,5022610.814214,3558632.461734,1],    "boundingVolume": {    "region": [1.887188,0.595668,1.887288,0.595785,0.000000,8.763194]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428709.b3dm"}}}