{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949121,-0.314911,0.000000,0.000000,0.116081,-0.349859,0.929583,0.000000,-0.292467,0.881477,0.370758,0.000000,-1866254.684455,5624769.330383,2349994.960077,1],    "boundingVolume": {    "region": [1.891105,0.379767,1.891213,0.379882,0.000000,65.359440]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/20_76716.b3dm"}}}