{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949894,-0.312572,0.000000,0.000000,0.117811,-0.358023,0.926251,0.000000,-0.289242,0.878996,0.379084,0.000000,-1845715.591634,5609055.519562,2402821.445007,1],    "boundingVolume": {    "region": [1.888665,0.388795,1.888727,0.388818,0.000000,12.761657]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/30.b3dm"}}}