{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949582,-0.313519,0.000000,0.000000,0.173709,-0.526126,0.832476,0.000000,-0.260457,0.788868,0.556641,0.000000,-1662955.110332,5036736.494445,3530227.521892,1],    "boundingVolume": {    "region": [1.889633,0.590275,1.889753,0.590399,0.000000,6.726611]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/14_1338773.b3dm"}}}