Function decode_embedded_receiver 

pub fn decode_embedded_receiver(data: &[u8]) -> Option<Vec<u8>>

Extracts the embedded receiver address from ESDT/NFT transfer data payloads.

Handles three built-in transfer functions:

• ESDTNFTTransfer@token@nonce@qty@dest → dest at position 3
• MultiESDTNFTTransfer@dest@numTokens@... → dest at position 0
• ESDTTransfer@token@amount@dest → dest at position 2

Arguments

• data - The transaction data payload bytes

Returns

The decoded receiver address bytes if found, None otherwise