{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950362,-0.311146,0.000000,0.000000,0.173848,-0.531001,0.829346,0.000000,-0.257505,0.786521,0.561317,0.000000,-1644136.487779,5021834.601549,3559945.639692,1],    "boundingVolume": {    "region": [1.887145,0.595918,1.887245,0.596035,0.000000,8.806958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1430316.b3dm"}}}