Actor Invoke serialization between Golang & JS

**Describe the bug**
I have an actor host written in Javascript, and an actor client trying to invoke the actor, written in Go.
When I invoke a method from the Go client and serialize the data as JSON, the actor is activated but receives data that looks like this
```
{"type":"Buffer","data":[123,34,113,117,101,114,121,67,111,110,116,97,105,110,101,114,34,58,34,100,101,102,97,117,108,116,34,44,34,109,111,100,101,34,58,34,113,117,101,114,121,34,44,34,113,117,101,114,121,34,58,34,77,65,84,67,72,32,92,110,32,32,40,105,58,73,116,101,109,32,123,67,97,116,101,103,111,114,121,58,32,39,49,39,125,41,92,110,82,69,84,85,82,78,32,92,110,32,32,105,46,73,116,101,109,73,100,32,65,83,32,73,100,44,32,92,110,32,32,105,46,78,97,109,101,32,97,115,32,78,97,109,101,44,92,110,32,32,105,46,67,97,116,101,103,111,114,121,32,97,115,32,67,97,116,101,103,111,114,121,92,110,34,44,34,115,111,117,114,99,101,115,34,58,123,34,115,117,98,115,99,114,105,112,116,105,111,110,115,34,58,91,123,34,105,100,34,58,34,109,121,45,115,111,117,114,99,101,52,34,125,93,125,125],"id":"query20"}
```

If I invoke the actor from another Javascript client, it works as expected but from the Go client, the data payload comes in as an array of bytes.

No source files or tests are named. Reproduce the actor invocation from the Go client and compare its serialization boundary with the working JavaScript client; done means the JavaScript actor receives the decoded payload rather than a byte array.

Written by the indexing model from the issue text.