{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949125,-0.314901,0.000000,0.000000,0.116081,-0.349874,0.929577,0.000000,-0.292456,0.881475,0.370772,0.000000,-1866181.109988,5624755.615417,2350085.602695,1],    "boundingVolume": {    "region": [1.891094,0.379783,1.891202,0.379898,0.000000,65.359440]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/20_76961.b3dm"}}}