{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949082,-0.315028,0.000000,0.000000,0.115961,-0.349354,0.929787,0.000000,-0.292641,0.881638,0.370239,0.000000,-1867361.141653,5625786.683697,2346700.601561,1],    "boundingVolume": {    "region": [1.891228,0.379208,1.891337,0.379323,0.000000,71.183006]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/15_6691.b3dm"}}}