curl --request POST \
  --url https://api.ravan.ai/api/v1/contacts/{id}/notes \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "content": "<string>"
}
'

{
  "success": true,
  "message": "<string>",
  "data": {
    "id": "<string>",
    "content": "<string>",
    "created_at": "<string>"
  }
}