received unexcept payload from java producer

[LvBay]

java client

./bin/pulsar-client produce persistent://my-tenant/my-namespace/my-topic20-partition-10 -m "hello-pulsaraaaaaaaaa aaaaaaaaaaa aaaaa bbbb"

go received payload(bytes)

[0 0 0 2 24 46 104 101 108 108 111 45 112 117 108 115 97 114 97 97 97 97 97 97 97 97 97 32 97 97 97 97 97 97 97 97 97 97 97 32 32 32 97 97 97 97 97 32 98 98 98 98]

go received payload(string)

.hello-pulsaraaaaaaaaa aaaaaaaaaaa aaaaa bbbb

The first few bytes of the payload are a bit strange. Is it because of java-client or go-client or pulsar?

[LvBay]

java client

./bin/pulsar-client produce persistent://my-tenant/my-namespace/my-topic20-partition-10 -m '"name":"bobaa"'

go received payload(bytes)

[0 0 0 2 24 12 110 97 109 101 34 58 34 98 111 98 97 97]

go received payload(string)

(There is a blank line here.)
name":"bobaa

This time there are some characters missing, and the double quotes at the beginning and end are gone.