{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949123,-0.314906,0.000000,0.000000,0.116092,-0.349899,0.929566,0.000000,-0.292457,0.881463,0.370800,0.000000,-1866191.511716,5624678.854942,2350259.880955,1],    "boundingVolume": {    "region": [1.891100,0.379812,1.891208,0.379927,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_77356.b3dm"}}}