{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951823,-0.306647,0.000000,0.000000,0.114805,-0.356350,0.927273,0.000000,-0.284077,0.881764,0.376553,0.000000,-1812740.231823,5626683.904114,2386763.540409,1],    "boundingVolume": {    "region": [1.882453,0.386065,1.882477,0.386080,0.000000,10.347008]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15.b3dm"}}}