{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950709,-0.310084,0.000000,0.000000,0.173217,-0.531079,0.829428,0.000000,-0.256651,0.786887,0.561195,0.000000,-1638685.842218,5024169.478530,3559169.497728,1],    "boundingVolume": {    "region": [1.886020,0.595771,1.886135,0.595886,0.000000,8.784505]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/13_1425190.b3dm"}}}