{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949073,-0.315056,0.000000,0.000000,0.176197,-0.530777,0.828994,0.000000,-0.260629,0.785117,0.561840,0.000000,-1664084.608762,5012883.044090,3563269.139932,1],    "boundingVolume": {    "region": [1.891261,0.596597,1.891362,0.596619,0.000000,10.428684]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/9_1420004.b3dm"}}}