{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950739,-0.309991,0.000000,0.000000,0.173188,-0.531165,0.829379,0.000000,-0.256560,0.786865,0.561268,0.000000,-1638100.078160,5024030.332547,3559632.410013,1],    "boundingVolume": {    "region": [1.885907,0.595807,1.886053,0.596026,0.000000,8.584499]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/13_1339934.b3dm"}}}