{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858391,-0.512996,0.000000,0.000000,0.262449,-0.439153,0.859224,0.000000,-0.440001,0.736248,0.514139,0.000000,-2808870.199498,4700048.124442,3260183.230106,1],    "boundingVolume": {    "region": [2.109386,0.539941,2.109550,0.540066,0.000000,16.072433]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/4_127919.b3dm"}}}