{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949159,-0.314796,0.000000,0.000000,0.116068,-0.349965,0.929544,0.000000,-0.292348,0.881476,0.370854,0.000000,-1865495.494907,5624763.432067,2350607.657891,1],    "boundingVolume": {    "region": [1.890984,0.379871,1.891092,0.379986,0.000000,71.051956]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/14/21_850.b3dm"}}}