Intervals API Resource:

These fields describe the response payload from GET /contacttype/ for this collection-only resource (see the example below and the field descriptions for how values nest in JSON). Boolean values are "t" / "f" strings. Numeric IDs and floats are returned as strings. Nullable fields may be JSON null.

Sample response object. Non-null values are strings in JSON (including IDs, numeric fields, and booleans as "t" / "f"). Nullable fields may be JSON null when absent.

{
    "id": "123456",
    "name": "Example Name"
}