{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949118,-0.314920,0.000000,0.000000,0.116104,-0.349920,0.929557,0.000000,-0.292467,0.881449,0.370823,0.000000,-1866253.308496,5624594.831127,2350410.874369,1],    "boundingVolume": {    "region": [1.891114,0.379838,1.891222,0.379953,0.000000,61.026710]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_316.b3dm"}}}