curl --request POST \
  --url https://amoy-indexer.sequence.app/rpc/Indexer/GetNativeTokenBalance \
  --header 'Content-Type: application/json' \
  --header 'X-Access-Key: <api-key>' \
  --data '
{
  "accountAddress": "<string>"
}
'

{
  "balance": {
    "accountAddress": "<string>",
    "balance": "<string>"
  }
}