Function: send_message
This tool belongs to the Message API, which is used to manage user interactions in a workspace. Tool description: Send a message to a user.
Parameters: receiver_id: type: string
description: User ID of the user to send the message to.
message: type: string
description: Message to be sent.
Required parameters: receiver_id, message
Response: sent_status: type: boolean
description: True if the message was sent successfully, False otherwise.
message_id: type: integer
description: ID of the sent message.
message: type: string
description: A message describing the result of the send attempt.