{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949125,-0.314898,0.000000,0.000000,0.116081,-0.349875,0.929577,0.000000,-0.292453,0.881475,0.370773,0.000000,-1866167.378123,5624758.669968,2350089.172100,1],    "boundingVolume": {    "region": [1.891092,0.379783,1.891200,0.379898,0.000000,65.359440]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/20_76954.b3dm"}}}