{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950421,-0.310965,0.000000,0.000000,0.173483,-0.530228,0.829917,0.000000,-0.257534,0.787116,0.560469,0.000000,-1644314.386473,5025618.290169,3554556.220686,1],    "boundingVolume": {    "region": [1.886913,0.594879,1.887096,0.595025,0.000000,8.769104]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/13_1449289.b3dm"}}}