{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950359,-0.311155,0.000000,0.000000,0.173664,-0.530421,0.829755,0.000000,-0.257640,0.786910,0.560709,0.000000,-1644995.548852,5024308.946769,3556081.422973,1],    "boundingVolume": {    "region": [1.887154,0.595183,1.887254,0.595300,0.000000,8.778256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1454237.b3dm"}}}