{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858517,-0.512785,0.000000,0.000000,0.262472,-0.439438,0.859071,0.000000,-0.439740,0.736224,0.514396,0.000000,-2807208.281906,4699901.340921,3261814.861823,1],    "boundingVolume": {    "region": [2.109139,0.540241,2.109304,0.540366,0.000000,16.841433]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/6_247821.b3dm"}}}