curl --request POST \
--url https://api.pipevest.com/v1/accounts\
--header 'Authorization: Bearer 123456' \
--header 'Content-Digest: sha-512=:RK/0qy18MlBSVnWgjwz6lZEWjP/lF5HF9bvEF8FabDg=:' \
--header 'Content-Length: 18' \
--header 'Content-Type: application/json' \
--header 'Signature: sig1=:OTEyMjY4...A5NTNDMEQ=:' \
--header 'Signature-Input: sig1=("Authorization" "Content-Digest" "Content-Length" "Content-Type" "X-Client-Id" "X-Idempotency-Key" "@method" "@target-uri" "@path" "@query");keyid="staging-pipevest-ed25519";created=1732893484;expires=1732893584' \
--header 'X-Client-Id: 123456' \
--header 'X-Idempotency-Key: 123456' \
...
--data '{"customerId": 123456, "currency": "ZMW", "investmentTypes": "INTERNATIONAL_STOCKS"}'