Gmail API Send message : ArgumentError: no method name given

gistfile1.rb

@email = @google_api_client.execute(
    api_method: @gmail.users.messages.send,
    parameters: {
        userId: 'me',
        message: {
            raw: {
                payload: {
                    body: { date: 'aGVsbG8=' },
                    headers: [{ name: 'to',
                                value: 'akash@gmail.com'},
                              { name: 'from',
                                value: 'akash@gmail.com'},
                              { name: 'subject',
                                value: 'Hi'}],
                    mimeType: 'text/plain'
                }
            }
        }
    },
    headers: {'Content-Type' => 'application/json'}
)

@gmail.users.messages.send(:get)

Where do you identify the body text?

Mail instance then using the mightly to_s method to encode works for me. Thanks for the notes.

I am facing the same problem. Could you please post a sample working code?