{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949129,-0.314888,0.000000,0.000000,0.116098,-0.349941,0.929550,0.000000,-0.292435,0.881453,0.370841,0.000000,-1866052.540851,5624614.785084,2350521.777129,1],    "boundingVolume": {    "region": [1.891081,0.379857,1.891189,0.379972,0.000000,71.292590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_589.b3dm"}}}