Changes to Send audio message

added the media type application/json for the response with the status 400

added the media type application/json for the response with the status 401

added the media type application/json for the response with the status 404

request body became required

the request property from became required

the request property to became required

the from request property's minLength was increased from 0 to 1

the to request property's minLength was increased from 0 to 1

the audio/link request property format changed from no format to uri

added the non-success response with the status 400

added the non-success response with the status 401

added the non-success response with the status 404

the response property id became required for the status 200

the id response's property pattern ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ was added for the status 200