{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948811,-0.315844,0.000000,0.000000,0.176369,-0.529819,0.829570,0.000000,-0.261464,0.785450,0.560985,0.000000,-1669413.867612,5014995.574324,3557836.200812,1],    "boundingVolume": {    "region": [1.892095,0.595464,1.892191,0.595687,0.000000,8.778929]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1070848.b3dm"}}}