{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858650,-0.512562,0.000000,0.000000,0.262226,-0.439284,0.859225,0.000000,-0.439629,0.736471,0.514137,0.000000,-2806497.468109,4701474.260256,3260170.420104,1],    "boundingVolume": {    "region": [2.108881,0.539939,2.109045,0.540064,0.000000,23.404700]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/4_219558.b3dm"}}}