{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858668,-0.512533,0.000000,0.000000,0.262239,-0.439341,0.859192,0.000000,-0.439586,0.736458,0.514193,0.000000,-2806225.696120,4701390.756542,3260522.389968,1],    "boundingVolume": {    "region": [2.108846,0.540003,2.109010,0.540129,0.000000,23.404700]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/4_221650.b3dm"}}}