{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858726,-0.512435,0.000000,0.000000,0.262340,-0.439623,0.859016,0.000000,-0.439412,0.736356,0.514488,0.000000,-2805113.959003,4700745.343076,3262396.430577,1],    "boundingVolume": {    "region": [2.108732,0.540347,2.108896,0.540473,0.000000,15.319766]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/7_253843.b3dm"}}}