{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949114,-0.314931,0.000000,0.000000,0.116103,-0.349901,0.929564,0.000000,-0.292480,0.881453,0.370805,0.000000,-1866338.606953,5624616.404141,2350292.315991,1],    "boundingVolume": {    "region": [1.891127,0.379818,1.891235,0.379933,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_77444.b3dm"}}}