Generates an exit 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 either '0x01' or '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 '0' Gwei.
• There must be no pending partial withdrawals with a total sum exceeding '0' Gwei.

Important: A successful transaction to the withdrawal smart contract does not guarantee that the validator will exit on the Consensus Layer (CL), as validator state changes may affect the process. Standard gas fees will apply regardless of the CL outcome.