MessagePreview
object
textrequired- string
subjectrequired- string or null
htmlrequired- string or null
smsrequired- object or null
sms.encodingrequired- "gsm" | "unicode"
sms.segmentsrequired- integer
{
"text": "string",
"subject": "string",
"html": "string",
"sms": {
"encoding": "gsm",
"segments": 0
}
}