{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949124,-0.314901,0.000000,0.000000,0.116080,-0.349869,0.929579,0.000000,-0.292457,0.881476,0.370767,0.000000,-1866189.761058,5624766.230110,2350053.543286,1],    "boundingVolume": {    "region": [1.891095,0.379777,1.891203,0.379892,0.000000,65.359440]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/20_76899.b3dm"}}}