{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896750,-0.442537,0.000000,0.000000,0.286867,-0.581304,0.761441,0.000000,-0.336012,0.680891,0.650756,0.000000,-2146177.132646,4348982.832761,4128682.842817,1],    "boundingVolume": {    "region": [2.029173,0.708542,2.029271,0.708618,0.000000,6.937206]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_1791042.b3dm"}}}