curl --request POST \
  --url https://live.deck.co/api/v1/connections \
  --header 'Content-Type: application/json' \
  --header 'x-deck-client-id: <api-key>' \
  --header 'x-deck-secret: <api-key>' \
  --data '
{
  "source_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "auth_method": "<string>",
  "auth_credentials": {
    "username": "<string>",
    "password": "<string>"
  },
  "deck_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

{
  "connection_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "status": "<string>",
  "source_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "auth_method": "<string>",
  "created_at": 123,
  "updated_at": 123,
  "access_token": "<string>"
}