{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950344,-0.311202,0.000000,0.000000,0.173816,-0.530796,0.829484,0.000000,-0.257594,0.786637,0.561112,0.000000,-1644704.785687,5022577.240166,3558643.982720,1],    "boundingVolume": {    "region": [1.887204,0.595670,1.887303,0.595787,0.000000,8.763194]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428718.b3dm"}}}