{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950543,-0.310593,0.000000,0.000000,0.173723,-0.531665,0.828947,0.000000,-0.256922,0.786288,0.561909,0.000000,-1640419.809538,5020361.364122,3563710.758830,1],    "boundingVolume": {    "region": [1.886564,0.596643,1.886662,0.596742,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394638.b3dm"}}}