{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950133,-0.311846,0.000000,0.000000,0.172975,-0.527021,0.832063,0.000000,-0.258937,0.788930,0.557261,0.000000,-1653257.809530,5037144.834831,3534170.815875,1],    "boundingVolume": {    "region": [1.887930,0.591078,1.887934,0.591090,0.000000,7.360377]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/5/21.b3dm"}}}