{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950380,-0.311090,0.000000,0.000000,0.173602,-0.530353,0.829812,0.000000,-0.257605,0.786981,0.560625,0.000000,-1644768.608552,5024763.304147,3555547.969658,1],    "boundingVolume": {    "region": [1.887087,0.595082,1.887186,0.595199,0.000000,8.720099]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/7_1449790.b3dm"}}}