{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949884,-0.312603,0.000000,0.000000,0.174485,-0.530195,0.829728,0.000000,-0.258831,0.786490,0.560750,0.000000,-1652597.933062,5021628.146553,3556341.406898,1],    "boundingVolume": {    "region": [1.888647,0.595226,1.888810,0.595357,0.000000,8.720260]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/12_1356121.b3dm"}}}