{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949100,-0.314976,0.000000,0.000000,0.176071,-0.530543,0.829170,0.000000,-0.260619,0.785307,0.561579,0.000000,-1664018.525630,5014093.048469,3561608.338741,1],    "boundingVolume": {    "region": [1.891159,0.596239,1.891296,0.596346,0.000000,8.793916]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447691.b3dm"}}}