{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949120,-0.314914,0.000000,0.000000,0.116124,-0.349987,0.929529,0.000000,-0.292453,0.881425,0.370893,0.000000,-1866165.079508,5624438.476625,2350852.067659,1],    "boundingVolume": {    "region": [1.891108,0.379913,1.891217,0.380028,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_1288.b3dm"}}}