curl --request POST \
  --url https://api.example.com/api/v1/destination/callback/slack \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "tenantId": 123,
  "code": "<string>"
}
'

[
  {
    "key": "<string>",
    "value": "<unknown>"
  }
]