Returns a single membership selected by `id`.
GET /api-openparlamento/v1/19/memberships_votes/7507860/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 7507860,
    "voting_slug": "vs19_064_039",
    "sitting": {
        "id": 1316,
        "date": "2023-03-07",
        "number": 64,
        "branch": "C"
    },
    "title": "Conversione decreto ricostruzione",
    "vote": "ABSE",
    "group": {
        "id": 11,
        "acronym": "FDI",
        "slug": "FdI",
        "branch": "camera",
        "name": "FRATELLI D'ITALIA",
        "color": "#37A6A5"
    },
    "group_vote": "AYE"
}