{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951826,-0.306638,0.000000,0.000000,0.114800,-0.356347,0.927275,0.000000,-0.284068,0.881769,0.376548,0.000000,-1812686.415201,5626714.532466,2386732.417812,1],    "boundingVolume": {    "region": [1.882398,0.386053,1.882512,0.386082,0.000000,10.347008]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_34998.b3dm"}}}