{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949330,-0.314283,0.000000,0.000000,0.175693,-0.530704,0.829147,0.000000,-0.260038,0.785476,0.561612,0.000000,-1660308.857846,5015169.965498,3561821.889490,1],    "boundingVolume": {    "region": [1.890448,0.596292,1.890547,0.596374,0.000000,8.777598]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/13_1415994.b3dm"}}}