{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949117,-0.314923,0.000000,0.000000,0.116102,-0.349909,0.929561,0.000000,-0.292471,0.881453,0.370812,0.000000,-1866280.965962,5624617.056649,2350336.229374,1],    "boundingVolume": {    "region": [1.891117,0.379825,1.891226,0.379940,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_77574.b3dm"}}}