{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949123,-0.314904,0.000000,0.000000,0.116079,-0.349862,0.929582,0.000000,-0.292460,0.881478,0.370760,0.000000,-1866211.708089,5624777.306642,2350009.897379,1],    "boundingVolume": {    "region": [1.891098,0.379770,1.891206,0.379885,0.000000,65.359440]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/20_76757.b3dm"}}}