curl --request POST \
  --url https://eu1.api.matillion.com/dpc/v1/secrets/{agentId}/secret-value \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "secret": {
    "name": "my-secret",
    "key": "<string>",
    "type": "PASSWORD",
    "value": "<unknown>"
  }
}
'

{
  "resolver_ref": "<string>",
  "vaultSecretName": "<string>"
}