{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950548,-0.310578,0.000000,0.000000,0.173717,-0.531673,0.828943,0.000000,-0.256908,0.786288,0.561916,0.000000,-1640330.496067,5020361.515670,3563751.382290,1],    "boundingVolume": {    "region": [1.886548,0.596651,1.886646,0.596749,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394720.b3dm"}}}