Sends a data as a message Data should run through JSON.stringify
Send awake init message to responder did - The Requestor's initial (temp) ECDH P-256
Capabilities that the Responder MUST provide
Send awake res message to requestor
The ECDH P-256 DID signalled by the Requestor in previous awake/init
Optional
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Awaits for a awake/msg and decrypts payload from sender DID