{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948996,-0.315288,0.000000,0.000000,0.175882,-0.529393,0.829945,0.000000,-0.261123,0.785962,0.560427,0.000000,-1667230.119116,5018253.986985,3554287.894027,1],    "boundingVolume": {    "region": [1.891509,0.594806,1.891604,0.594996,0.000000,16.329267]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/20/28_1177757.b3dm"}}}