{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949397,-0.314077,0.000000,0.000000,0.175363,-0.530090,0.829610,0.000000,-0.260014,0.785974,0.560925,0.000000,-1660155.549036,5018339.014518,3557456.534991,1],    "boundingVolume": {    "region": [1.890200,0.595370,1.890362,0.595636,0.000000,8.820135]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/14_1457510.b3dm"}}}