{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950346,-0.311196,0.000000,0.000000,0.173813,-0.530798,0.829484,0.000000,-0.257589,0.786639,0.561113,0.000000,-1644672.508554,5022584.450298,3558648.692211,1],    "boundingVolume": {    "region": [1.887198,0.595671,1.887297,0.595788,0.000000,8.763194]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428725.b3dm"}}}