{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949543,-0.313637,0.000000,0.000000,0.175126,-0.530197,0.829592,0.000000,-0.259644,0.786077,0.560953,0.000000,-1657790.147092,5018997.424977,3557629.588361,1],    "boundingVolume": {    "region": [1.889736,0.595403,1.889898,0.595669,0.000000,8.792672]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1367080.b3dm"}}}