Usage: dm-cli deal cancel [options] <bitcoin_address>

    Cancel a deal

    To cancel a deal you should sign the deal payment address and feeback text message
    with the seller bitcoin private key. For example, address, feedback, signature:
    2NEVoXnRgUeb3j17s7pP6DoFHBVHMb94gF5
    seller random cancel reason text
    IEOGJ5q/a2cWJPMosQmCHNN6RsXF8Xy/UgaazIoY2i5udbw/v38g1/PdWs451dvFr9Iq/Bq5YL2YdpUFTuijQ60=

    -m|--message <text>       Deal cancel reason text message
    -s|--signature <sig>      Bitcoin signature.