{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950552,-0.310567,0.000000,0.000000,0.173310,-0.530449,0.829812,0.000000,-0.257171,0.787123,0.560625,0.000000,-1642000.172597,5025670.521440,3555545.354984,1],    "boundingVolume": {    "region": [1.886494,0.595067,1.886677,0.595213,0.000000,8.720680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/15_1345948.b3dm"}}}