Get multiple placements

curl --request GET \
  --url https://your_a2_service/placements \
  --header 'Authorization: Bearer <token>'

[
  {
    "campaign_permission": {
      "black": [],
      "white": []
    },
    "created_at": "2023-11-07T05:31:56Z",
    "created_by": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "description": "<string>",
    "display": {
      "clktype": 1,
      "displayfmt": {
        "ext": {},
        "h": 250,
        "w": 300
      },
      "h": 250,
      "mime": [],
      "nativefmt": {
        "ext": {}
      },
      "w": 300
    },
    "ext": {
      "approval_method": "admin",
      "display": {
        "enabled": 0
      },
      "native": {
        "enabled": 0
      },
      "payout": "rates",
      "responsive": "fixed",
      "target_ecpm": 0,
      "video": {
        "enabled": 0
      }
    },
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "is_active": false,
    "name": "<string>",
    "no": 123,
    "updated_at": "2023-11-07T05:31:56Z",
    "video": {
      "clktype": 1,
      "ctype": [
        2
      ],
      "delay": 0,
      "h": 300,
      "linear": 0,
      "maxdur": 0,
      "mime": [],
      "mindur": 0,
      "playmethod": [],
      "ptype": 1,
      "skip": 0,
      "skipafter": 0,
      "skipmin": 0,
      "w": 480
    }
  }
]