curl --request POST \
  --url https://api.layerswap.io/api/v2/swaps/{swapId}/authorize \
  --header 'Content-Type: application/json' \
  --header 'X-LS-APIKEY: <api-key>' \
  --data '
{
  "signature": "<string>",
  "signer_address": "<string>"
}
'

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "metadata": {}
  }
}