{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949076,-0.315048,0.000000,0.000000,0.116120,-0.349808,0.929597,0.000000,-0.292599,0.881449,0.370721,0.000000,-1867097.701921,5624587.322956,2349762.511437,1],    "boundingVolume": {    "region": [1.891250,0.379728,1.891358,0.379843,0.000000,77.268840]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/20_76301.b3dm"}}}