{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949123,-0.314905,0.000000,0.000000,0.116056,-0.349793,0.929611,0.000000,-0.292470,0.881506,0.370687,0.000000,-1866275.182734,5624951.597256,2349545.400536,1],    "boundingVolume": {    "region": [1.891099,0.379691,1.891207,0.379806,0.000000,60.795093]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/19_75877.b3dm"}}}