{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949073,-0.315056,0.000000,0.000000,0.116158,-0.349914,0.929552,0.000000,-0.292592,0.881404,0.370834,0.000000,-1867050.472445,5624301.996721,2350478.070164,1],    "boundingVolume": {    "region": [1.891257,0.379849,1.891366,0.379964,0.000000,67.756070]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/17/21_531.b3dm"}}}