curl --request POST \
  --url https://api.sandbox.bitwage.com/api/user/payer/delete \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "user_id": "<string>",
  "external_company_id": "<string>"
}
'

{
  "external_company_id": "<string>"
}