{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950515,-0.310679,0.000000,0.000000,0.173761,-0.531617,0.828969,0.000000,-0.257001,0.786286,0.561876,0.000000,-1640920.686290,5020349.003905,3563498.997125,1],    "boundingVolume": {    "region": [1.886655,0.596603,1.886753,0.596701,0.000000,14.464368]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/7_1393951.b3dm"}}}