{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949082,-0.315028,0.000000,0.000000,0.116153,-0.349933,0.929546,0.000000,-0.292564,0.881406,0.370851,0.000000,-1866875.511030,5624315.418290,2350584.207060,1],    "boundingVolume": {    "region": [1.891229,0.379867,1.891337,0.379982,0.000000,68.927894]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/21_738.b3dm"}}}