{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950544,-0.310591,0.000000,0.000000,0.173716,-0.531649,0.828959,0.000000,-0.256924,0.786300,0.561892,0.000000,-1640430.021180,5020435.903522,3563601.783213,1],    "boundingVolume": {    "region": [1.886562,0.596622,1.886660,0.596721,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394364.b3dm"}}}