{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858775,-0.512353,0.000000,0.000000,0.262114,-0.439340,0.859230,0.000000,-0.439452,0.736583,0.514128,0.000000,-2805366.561904,4702189.879685,3260112.080719,1],    "boundingVolume": {    "region": [2.108636,0.539928,2.108801,0.540053,0.000000,33.926833]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/4_219290.b3dm"}}}