{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950550,-0.310572,0.000000,0.000000,0.173724,-0.531707,0.828920,0.000000,-0.256896,0.786268,0.561950,0.000000,-1640255.429925,5020232.135889,3563966.733937,1],    "boundingVolume": {    "region": [1.886542,0.596691,1.886640,0.596790,0.000000,14.800804]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1395019.b3dm"}}}