Authorization: ********************curl --location 'https://api.plexypay.com/v1/payments//cancel' \
--header 'Authorization: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"amount": 55.5
}'{
"id": "string",
"message": "string",
"networkTransactionReference": "string",
"responseCode": "string",
"success": "string"
}