{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858479,-0.512849,0.000000,0.000000,0.262623,-0.439615,0.858934,0.000000,-0.439725,0.736073,0.514625,0.000000,-2807113.312911,4698940.110939,3263271.330753,1],    "boundingVolume": {    "region": [2.109214,0.540508,2.109379,0.540633,0.000000,23.639566]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/9_269138.b3dm"}}}