{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948816,-0.315829,0.000000,0.000000,0.176354,-0.529804,0.829582,0.000000,-0.261456,0.785467,0.560966,0.000000,-1669358.503650,5015099.901029,3557715.930239,1],    "boundingVolume": {    "region": [1.892079,0.595441,1.892175,0.595664,0.000000,8.778929]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1181641.b3dm"}}}