curl --request POST \
  --url https://privacy.magicblock.app/tx/initialize-ephemeral-ata \
  --header 'Content-Type: application/json' \
  --data '
{
  "payer": "<string>",
  "user": "<string>",
  "mint": "<string>",
  "ephemeral_ata": "<string>",
  "ephemeral_ata_bump": 127,
  "cluster_url": "<string>"
}
'

{
  "transaction": "<string>",
  "message": "Transaction created successfully"
}