{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949108,-0.314950,0.000000,0.000000,0.116109,-0.349897,0.929565,0.000000,-0.292498,0.881448,0.370802,0.000000,-1866450.909468,5624585.203238,2350277.900774,1],    "boundingVolume": {    "region": [1.891146,0.379815,1.891255,0.379930,0.000000,70.386220]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/21_77466.b3dm"}}}