{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949074,-0.315053,0.000000,0.000000,0.175846,-0.529724,0.829741,0.000000,-0.260863,0.785832,0.560730,0.000000,-1665576.782907,5017427.642051,3556216.137253,1],    "boundingVolume": {    "region": [1.891240,0.595214,1.891378,0.595321,0.000000,8.820004]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/2_1375165.b3dm"}}}