{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950018,-0.312195,0.000000,0.000000,0.174247,-0.530237,0.829751,0.000000,-0.258500,0.786623,0.560716,0.000000,-1650488.941412,5022476.889228,3556123.726595,1],    "boundingVolume": {    "region": [1.888217,0.595184,1.888381,0.595315,0.000000,8.820528]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/12_1456700.b3dm"}}}