{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950739,-0.309994,0.000000,0.000000,0.173179,-0.531132,0.829402,0.000000,-0.256568,0.786886,0.561234,0.000000,-1638156.333738,5024163.877824,3559419.463167,1],    "boundingVolume": {    "region": [1.885910,0.595766,1.886055,0.595986,0.000000,8.813958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/12_1422086.b3dm"}}}