curl --request POST \
  --url https://prod.featherhq.com/api/v1/phone-number/sms/{id}/link-agent \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "agentId": "<string>"
}
'

{
  "success": true,
  "displayMessage": "<string>"
}