Get all mappings

Example response

{
  "body": {
    "results": [
      {
        "subject": "ms.gateway.abcdef123456.mapping.get.api.users",
        "path": "/api/users",
        "method": "GET",
        "is_public": true,
        "limit": {
          "request": 5000,
          "time": 1000
        },
        "timeout": 30000,
        "traffic_distribution": {
          "1": 100
        },
        "modified": 1713531894,
        "type": "created"
      }
    ],
    "results_total": 2
  },
  "metadata": {
    "subject": "ms.gateway.abcdef123456.gateway"
  }
}