{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950342,-0.311208,0.000000,0.000000,0.173823,-0.530806,0.829476,0.000000,-0.257597,0.786628,0.561124,0.000000,-1644722.499093,5022518.806344,3558717.769475,1],    "boundingVolume": {    "region": [1.887211,0.595684,1.887310,0.595801,0.000000,8.817695]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428800.b3dm"}}}