{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949070,-0.315064,0.000000,0.000000,0.176123,-0.530537,0.829163,0.000000,-0.260689,0.785276,0.561589,0.000000,-1664470.730665,5013896.234993,3561673.666440,1],    "boundingVolume": {    "region": [1.891252,0.596252,1.891389,0.596358,0.000000,8.793916]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447975.b3dm"}}}