Create partner crypto withdrawal approval draft

curl --location '/partner/v1/customers//crypto-withdrawals' \
--header 'X-Partner-Client-Id;' \
--header 'X-Partner-Timestamp;' \
--header 'X-Partner-Nonce;' \
--header 'X-Partner-Signature;' \
--header 'X-Request-Id;' \
--header 'Idempotency-Key;' \
--header 'Content-Type: application/json' \
--data '{
    "routeCode": "string",
    "walletBeneficiaryId": "c6f4d0cf-4b9d-419b-b293-8482d15ff264",
    "amountMinor": "string",
    "currency": "USDT",
    "currencyScale": 0,
    "clientReference": "string",
    "withdrawalType": 1,
    "externalFeeFields": {
        "property1": "string",
        "property2": "string"
    },
    "purposeOfPayment": 0,
    "otherPurpose": "string",
    "relationshipWithThirdParty": 0,
    "otherRelationship": "string",
    "operationAuthorization": {
        "operationType": "FIAT_WITHDRAWAL_CREATE",
        "operationHash": "string",
        "authorizedAt": "2019-08-24T14:15:22.123Z",
        "authorizedByPartnerUserRef": "string",
        "authorizedByPartnerPolicyRef": "string",
        "authorizationMethod": "string",
        "mfaEvidenceRef": "string",
        "sourceSystem": "string",
        "sourceActionRef": "string",
        "rawEvidence": {
            "property1": "string",
            "property2": "string"
        }
    }
}'