{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950723,-0.310042,0.000000,0.000000,0.173186,-0.531065,0.829444,0.000000,-0.256621,0.786912,0.561172,0.000000,-1638494.154417,5024333.830913,3559026.701766,1],    "boundingVolume": {    "region": [1.885976,0.595744,1.886091,0.595859,0.000000,8.784505]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/13_1421953.b3dm"}}}