{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950751,-0.309955,0.000000,0.000000,0.173164,-0.531162,0.829386,0.000000,-0.256531,0.786881,0.561258,0.000000,-1637918.700607,5024133.458886,3559570.735282,1],    "boundingVolume": {    "region": [1.885869,0.595795,1.886014,0.596015,0.000000,8.651848]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/12_1339962.b3dm"}}}