{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948813,-0.315840,0.000000,0.000000,0.176369,-0.529828,0.829564,0.000000,-0.261458,0.785446,0.560993,0.000000,-1669376.913312,5014969.582295,3557889.815951,1],    "boundingVolume": {    "region": [1.892090,0.595474,1.892186,0.595697,0.000000,8.800682]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1181828.b3dm"}}}