This endpoint allows you to send a message to a topic id, you may simply broadcast the message, or wait for consensus to be reached using allow_synchronous_consensus.
If you are using testnet or mainnet environments there will be a explorer_url property linking to an external hashgraph explorer for the given transaction.
The API_SECRET_KEY from th e client's environment variables.
A reference to an internal app idenitier so that after the response it will be easier to link.
Wait for consensus to be finished to finality before receiving a response.
The id of the topic you want to sent the message to.
The string message that is sent to received a consensus response.
New message sent to a topic, using a topic_id and message.