{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949134,-0.314871,0.000000,0.000000,0.116081,-0.349908,0.929564,0.000000,-0.292424,0.881472,0.370804,0.000000,-1865981.817215,5624735.693896,2350290.143914,1],    "boundingVolume": {    "region": [1.891063,0.379817,1.891171,0.379933,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_77455.b3dm"}}}