{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950873,-0.309581,0.000000,0.000000,0.173081,-0.531616,0.829113,0.000000,-0.256137,0.786720,0.561664,0.000000,-1635403.630955,5023112.447273,3562149.775372,1],    "boundingVolume": {    "region": [1.885476,0.596285,1.885622,0.596505,0.000000,8.806427]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/15_1385855.b3dm"}}}