{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949239,-0.314555,0.000000,0.000000,0.175342,-0.529133,0.830225,0.000000,-0.260604,0.786431,0.560010,0.000000,-1663915.734883,5021240.195998,3551640.450550,1],    "boundingVolume": {    "region": [1.890717,0.594282,1.890850,0.594514,0.000000,8.750990]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/10.b3dm"}}}