{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950471,-0.310815,0.000000,0.000000,0.114361,-0.349715,0.929850,0.000000,-0.288747,0.882987,0.370080,0.000000,-1842511.437110,5634395.448608,2345695.732270,1],    "boundingVolume": {    "region": [1.886772,0.379056,1.886921,0.379135,0.000000,21.148113]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/20/15_4278.b3dm"}}}