Ws withdrawal feed data v1

Subscribes to a feed of withdrawal updates.

Name `Lite`	Type	Required `Default`	Description
stream `s`	string	True	The websocket channel to which the response is sent
selector `s1`	string	True	Primary selector
sequence_number `sn`	string	True	A sequence number used to determine message order within a stream. - If `useGlobalSequenceNumber` is false, this returns the gateway sequence number, which increments by one locally within each stream and resets on gateway restarts. - If `useGlobalSequenceNumber` is true, this returns the global sequence number, which uniquely identifies messages across the cluster. - A single cluster payload can be multiplexed into multiple stream payloads. - To distinguish each stream payload, a `dedupCounter` is included. - The returned sequence number is computed as: `cluster_sequence_number * 10^5 + dedupCounter`.
feed `f`	Withdrawal	True	The Withdrawal object
prev_sequence_number `ps`	string	True	The previous sequence number that determines the message order

Name `Lite`	Type	Required `Default`	Description
from_account_id `fa`	string	True	The subaccount to withdraw from
to_eth_address `te`	string	True	The ethereum address to withdraw to
currency `c`	string	True	The token currency to withdraw
num_tokens `nt`	string	True	The number of tokens to withdraw
signature `s`	Signature	True	The signature of the withdrawal

Name `Lite`	Type	Required `Default`	Description
signer `s`	string	True	The address (public key) of the wallet signing the payload
r `r`	string	True	Signature R
s `s1`	string	True	Signature S
v `v`	integer	True	Signature V
expiration `e`	string	True	Timestamp after which this signature expires, expressed in unix nanoseconds. Must be capped at 30 days
nonce `n`	integer	True	Users can randomly generate this value, used as a signature deconflicting key. ie. You can send the same exact instruction twice with different nonces. When the same nonce is used, the same payload will generate the same signature. Our system will consider the payload a duplicate, and ignore it. Range: 0 to 4,294,967,295 (uint32)
chain_id `ci`	string	True	Chain ID used in EIP-712 domain. Zero value fallbacks to GRVT Chain ID.