Converts a network serialized transaction to a PSBT.
hexstringstringREQUIREDpermitsigdatabooleanoptionaliswitnessbooleanoptionalcurl --user myuser --data-binary '{"jsonrpc":"1.0","id":"1","method":"converttopsbt","params":["rawtx_hex"]}' -H 'content-type:text/plain;' http://127.0.0.1:8332/"cHNidP8BAFUCAAAAAe..."