{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949116,-0.314925,0.000000,0.000000,0.116086,-0.349859,0.929582,0.000000,-0.292480,0.881472,0.370760,0.000000,-1866338.399710,5624736.858692,2350006.122189,1],    "boundingVolume": {    "region": [1.891120,0.379769,1.891229,0.379884,0.000000,65.359440]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/20_76749.b3dm"}}}