Idempotency-Key and step-up (crypto:withdraw). Validates sufficient wallet balance (INSUFFICIENT_BALANCE).X-Step-Up-Token required for operation crypto:withdraw. Header Idempotency-Key is required.Authorization: ********************X-Step-Up-Token: ********************curl --location '/v1/crypto/withdrawals' \
--header 'Idempotency-Key;' \
--header 'X-Step-Up-Token;' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"asset_code": "string",
"network_id": "string",
"to_address": "string",
"amount": "string"
}'{
"id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
"status": "string",
"asset_code": "string",
"amount": "string",
"to_address": "string",
"tx_hash": "string",
"created_at": "2019-08-24T14:15:22.123Z"
}