{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950784,-0.309854,0.000000,0.000000,0.173224,-0.531538,0.829133,0.000000,-0.256369,0.786666,0.561634,0.000000,-1636883.948132,5022766.344327,3561959.160196,1],    "boundingVolume": {    "region": [1.885789,0.596338,1.885882,0.596380,0.000000,8.648114]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/14/15.b3dm"}}}