curl --request POST \
  --url https://api.eflow.team/v1/networks/trafficsource \
  --header 'Content-Type: application/json' \
  --header 'X-Eflow-Api-Key: <api-key>' \
  --data '
{
  "name": "traffic source 3",
  "postback_url": "https://www.postbackurl.com",
  "is_public": false,
  "parameters": [
    {
      "tracking_parameter": "param1",
      "tracking_value": "value1"
    },
    {
      "tracking_parameter": "param2",
      "tracking_value": "value2"
    }
  ]
}
'

{
  "network_traffic_source_id": 1,
  "network_id": 1,
  "name": "traffic source 3",
  "postback_url": "https://www.testpostback.com",
  "time_created": 1774721376,
  "time_saved": 1774721376,
  "relationship": {
    "parameters": {
      "total": 2,
      "entries": [
        {
          "network_traffic_source_id": 1,
          "network_id": 1,
          "tracking_parameter": "param1",
          "tracking_value": "value1"
        },
        {
          "network_traffic_source_id": 1,
          "network_id": 1,
          "tracking_parameter": "param2",
          "tracking_value": "value2"
        }
      ]
    }
  },
  "is_public": false
}