curl --request PATCH \
  --url https://api.nango.dev/connections/{connectionId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "tags": {},
  "end_user": {
    "id": "<string>",
    "email": "<string>",
    "display_name": "<string>",
    "tags": {}
  }
}
'

{
  "success": true
}