{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949116,-0.314927,0.000000,0.000000,0.116118,-0.349954,0.929542,0.000000,-0.292469,0.881433,0.370860,0.000000,-1866264.958418,5624493.220546,2350643.201428,1],    "boundingVolume": {    "region": [1.891121,0.379877,1.891230,0.379992,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_940.b3dm"}}}