{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949066,-0.315078,0.000000,0.000000,0.176129,-0.530528,0.829168,0.000000,-0.260702,0.785277,0.561582,0.000000,-1664553.879712,5013900.559067,3561629.021020,1],    "boundingVolume": {    "region": [1.891267,0.596243,1.891404,0.596349,0.000000,8.793916]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447798.b3dm"}}}