{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949123,-0.314907,0.000000,0.000000,0.116056,-0.349791,0.929611,0.000000,-0.292472,0.881506,0.370685,0.000000,-1866287.120046,5624952.703880,2349533.350396,1],    "boundingVolume": {    "region": [1.891101,0.379689,1.891209,0.379804,0.000000,60.795093]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/19_75868.b3dm"}}}