{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949068,-0.315071,0.000000,0.000000,0.176123,-0.530526,0.829170,0.000000,-0.260697,0.785281,0.561578,0.000000,-1664519.303705,5013928.105816,3561606.552386,1],    "boundingVolume": {    "region": [1.891259,0.596239,1.891396,0.596345,0.000000,8.793916]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447693.b3dm"}}}