This method is used to fetch all the available analytics resources like datasets,lenses,dashboards,etc.
This method does not require any parameter.
Contact object has around 61 fields so this method will return you that much records, one record represents one field.
{
"dashboards": "/services/data/v49.0/wave/dashboards",
"dataConnectorTypes": "/services/data/v49.0/wave/dataConnectorTypes",
"dataConnectors": "/services/data/v49.0/wave/dataConnectors",
"dataflowjobs": "/services/data/v49.0/wave/dataflowjobs",
"datasets": "/services/data/v49.0/wave/datasets",
"folders": "/services/data/v49.0/wave/folders",
"lenses": "/services/data/v49.0/wave/lenses",
"query": "/services/data/v49.0/wave/query",
"recipes": "/services/data/v49.0/wave/recipes",
"replicatedDatasets": "/services/data/v49.0/wave/replicatedDatasets",
"schedules": "/services/data/v49.0/wave/watchlist/schedules",
"templates": "/services/data/v49.0/wave/templates",
"trendedreports": "/services/data/v49.0/wave/trendedreports"
}