{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949096,-0.314987,0.000000,0.000000,0.116545,-0.351166,0.929031,0.000000,-0.292362,0.880925,0.372150,0.000000,-1865592.260923,5621265.950469,2358827.507052,1],    "boundingVolume": {    "region": [1.891170,0.381274,1.891309,0.381374,0.000000,7.485960]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/13_67966.b3dm"}}}