Generates an partial withdrawal message that a user can sign as part of an exit transaction and submit to the official Ethereum withdrawal smart contract. The response includes the withdrawal contract address for the specified network in the request path.

To successfully submit an exit withdrawal intent, the validator must meet the following conditions:

• The withdrawal credentials prefix must be type '0x02' and contain the withdrawal address.
• The validator must be in an active state and have been active for at least 256 epochs.
• The validator's balance must be greater than (32000000000 Gwei + total sum of pending partial withdrawals).
• The validator's effective balance must be 32000000000 Gwei or greater.

Standard gas fees will apply.