{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949137,-0.314864,0.000000,0.000000,0.116077,-0.349907,0.929565,0.000000,-0.292418,0.881475,0.370802,0.000000,-1865940.715668,5624754.368680,2350278.163559,1],    "boundingVolume": {    "region": [1.891056,0.379815,1.891164,0.379931,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_77462.b3dm"}}}