{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948805,-0.315862,0.000000,0.000000,0.176371,-0.529793,0.829586,0.000000,-0.261484,0.785461,0.560961,0.000000,-1669541.529509,5015061.103320,3557684.945068,1],    "boundingVolume": {    "region": [1.892114,0.595435,1.892210,0.595658,0.000000,8.778929]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1071015.b3dm"}}}