{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949632,-0.313367,0.000000,0.000000,0.115228,-0.349187,0.929941,0.000000,-0.291147,0.882296,0.369848,0.000000,-1857826.687086,5629980.769245,2344225.235186,1],    "boundingVolume": {    "region": [1.889527,0.378810,1.889539,0.378881,0.000000,10.969516]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15.b3dm"}}}