{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949077,-0.315044,0.000000,0.000000,0.116149,-0.349903,0.929558,0.000000,-0.292583,0.881412,0.370821,0.000000,-1866992.739063,5624356.213213,2350394.757047,1],    "boundingVolume": {    "region": [1.891245,0.379835,1.891354,0.379950,0.000000,62.488014]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/21_281.b3dm"}}}