SMS - Send a Message to a Single Recipient
POST https://{{et_subdomain}}.rest.marketingcloudapis.com/messaging/v1/sms/messages/{{$guid}}
Sends a message to a single recipient via a send definition using a messageKey path parameter.
Request Body
{"definitionKey"=>"tapi-sms-demo-postman", "recipient"=>{"to"=>"15015553119", "contactKey"=>"DD301", "attributes"=>{"FirstName"=>"Aaron", "password"=>"1234567890ab"}}, "subscriptions"=>{"resubscribe"=>true}, "content"=>{"message"=>"Override Text: %%FirstName%% Here is your new password: %%password%%"}}