{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950210,-0.311610,0.000000,0.000000,0.174201,-0.531200,0.829145,0.000000,-0.257826,0.786202,0.561616,0.000000,-1646185.749367,5019805.601054,3561846.917448,1],    "boundingVolume": {    "region": [1.887614,0.596233,1.887752,0.596442,0.000000,8.265898]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/1/2_1331644.b3dm"}}}