{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949056,-0.315109,0.000000,0.000000,0.176144,-0.530519,0.829170,0.000000,-0.260728,0.785271,0.561578,0.000000,-1664718.501716,5013861.757380,3561606.852282,1],    "boundingVolume": {    "region": [1.891299,0.596239,1.891436,0.596345,0.000000,8.803784]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1447697.b3dm"}}}