{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951011,-0.309156,0.000000,0.000000,0.115947,-0.356671,0.927007,0.000000,-0.286318,0.880757,0.377213,0.000000,-1827045.424916,5620263.251618,2390951.744156,1],    "boundingVolume": {    "region": [1.885021,0.386734,1.885184,0.386837,0.000000,4.292436]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/20/15_60970.b3dm"}}}