{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949489,-0.313801,0.000000,0.000000,0.175403,-0.530728,0.829193,0.000000,-0.259654,0.785652,0.561544,0.000000,-1657858.315746,5016290.627386,3561388.132253,1],    "boundingVolume": {    "region": [1.889941,0.596210,1.890040,0.596291,0.000000,8.782828]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1443976.b3dm"}}}