Send RCS (Single) Message

{
    "receivers": [
        "string"
    ],
    "contactGroups": [
        0
    ],
    "message": "string",
    "route": 0,
    "tag": "string",
    "custom": "string",
    "templeteId": 0,
    "automatcResponseId": "string",
    "scheduleDate": "string"
}