curl --request POST \
  --url https://ledger.sandbox.lerian.net/v1/settings/metadata-indexes/entities/{entity_name} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "metadataKey": "tier",
  "sparse": true,
  "unique": false
}
'

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://ledger.sandbox.lerian.net/v1/settings/metadata-indexes/entities/{entity_name}"

	payload := strings.NewReader("{\n  \"metadataKey\": \"tier\",\n  \"sparse\": true,\n  \"unique\": false\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({metadataKey: 'tier', sparse: true, unique: false})
};

fetch('https://ledger.sandbox.lerian.net/v1/settings/metadata-indexes/entities/{entity_name}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://ledger.sandbox.lerian.net/v1/settings/metadata-indexes/entities/{entity_name}"

payload = {
    "metadataKey": "tier",
    "sparse": True,
    "unique": False
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "entityName": "transaction",
  "indexName": "metadata.tier_1",
  "metadataKey": "tier",
  "sparse": true,
  "unique": false,
  "stats": {
    "accesses": 1523,
    "statsSince": "2024-12-01T10:30:00Z"
  }
}

{
  "code": "0065",
  "message": "<string>",
  "title": "Invalid Path Parameter",
  "entityType": "Account",
  "fields": {}
}

{
  "code": "0065",
  "message": "<string>",
  "title": "Invalid Path Parameter",
  "entityType": "Account",
  "fields": {}
}

{
  "code": "0065",
  "message": "<string>",
  "title": "Invalid Path Parameter",
  "entityType": "Account",
  "fields": {}
}