{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858446,-0.512904,0.000000,0.000000,0.262393,-0.439167,0.859234,0.000000,-0.439927,0.736304,0.514122,0.000000,-2808398.502236,4700405.269534,3260075.421793,1],    "boundingVolume": {    "region": [2.109279,0.539921,2.109443,0.540046,0.000000,81.018233]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/4_218523.b3dm"}}}