{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949795,-0.312872,0.000000,0.000000,0.115285,-0.349974,0.929639,0.000000,-0.290592,0.882157,0.370616,0.000000,-1854285.710322,5629104.448826,2349095.353206,1],    "boundingVolume": {    "region": [1.888943,0.379581,1.889081,0.379763,0.000000,35.627210]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/8_73221.b3dm"}}}