curl --request POST \
  --url https://api.sumvin.com/v0/bank-linking/accounts/{account_id}/processor-token \
  --header 'Content-Type: application/json' \
  --data '
{
  "processor": "<string>"
}
'

{
  "_links": {},
  "processor_token": "<string>",
  "account_id": "<string>"
}