{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950520,-0.310662,0.000000,0.000000,0.173758,-0.531641,0.828955,0.000000,-0.256982,0.786277,0.561898,0.000000,-1640800.173380,5020290.341172,3563636.206595,1],    "boundingVolume": {    "region": [1.886637,0.596629,1.886735,0.596727,0.000000,14.464368]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/7_1394482.b3dm"}}}