curl --request GET \
  --url https://vehicle.api.smartcar.com/v3/vehicles/{vehicleId}/signals

{
  "data": [
    {
      "id": "<string>",
      "type": "signal",
      "attributes": {
        "code": "chargeVoltage",
        "name": "Voltage",
        "group": "Charge",
        "status": {
          "value": "SUCCESS"
        },
        "body": {
          "unit": "volts",
          "value": 85
        }
      },
      "meta": {
        "retrievedAt": 1696156800,
        "oemUpdatedAt": 1696156799
      },
      "links": {
        "self": "<string>",
        "values": "<string>",
        "vehicle": "<string>"
      }
    }
  ],
  "meta": {
    "page": 1,
    "pageSize": 10,
    "totalCount": 5
  },
  "links": {
    "self": "/vehicles/vehicle123/signals?page=1&pageSize=10",
    "first": "/vehicles/vehicle123/signals?page=1&pageSize=10",
    "previous": null,
    "next": "/vehicles/vehicle123/signals?page=2&pageSize=10",
    "last": "/vehicles/vehicle123/signals?page=5&pageSize=10"
  },
  "included": {
    "vehicle": {
      "id": "<string>",
      "type": "vehicle",
      "attributes": {
        "make": "<string>",
        "model": "<string>",
        "year": 123
      },
      "links": {
        "self": "<string>"
      }
    }
  }
}