{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950559,-0.310543,0.000000,0.000000,0.173295,-0.530448,0.829816,0.000000,-0.257153,0.787133,0.560619,0.000000,-1641883.774749,5025732.296820,3555512.013344,1],    "boundingVolume": {    "region": [1.886470,0.595061,1.886652,0.595206,0.000000,8.720680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/15_1345970.b3dm"}}}