curl --request POST \
  --url https://api.interchange.io/api/v2/storefront/esa/{esaId}/gam-custom-targeting-keys/ensure \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "keys": [
    {
      "name": "<string>",
      "displayName": "<string>"
    }
  ]
}
'

import requests

url = "https://api.interchange.io/api/v2/storefront/esa/{esaId}/gam-custom-targeting-keys/ensure"

payload = { "keys": [
        {
            "name": "<string>",
            "displayName": "<string>"
        }
    ] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({keys: [{name: '<string>', displayName: '<string>'}]})
};

fetch('https://api.interchange.io/api/v2/storefront/esa/{esaId}/gam-custom-targeting-keys/ensure', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "created": [
    {
      "name": "<string>",
      "keyId": "<string>",
      "displayName": "<string>"
    }
  ],
  "alreadyExisted": [
    {
      "name": "<string>",
      "keyId": "<string>",
      "displayName": "<string>"
    }
  ]
}

{
  "data": null,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "field": "<string>",
    "details": {}
  }
}

{
  "data": null,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "field": "<string>",
    "details": {}
  }
}

{
  "data": null,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "field": "<string>",
    "details": {}
  }
}

{
  "data": null,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "field": "<string>",
    "details": {}
  }
}