A commonly asked question is how to represent a list in JSON. Assuming you had a list of sendSMSRequests, they would be represented as in list in JSON as follows:
{
"sendSmsRequests": [
{
"recipientNumber": "27828546453",
"message": "Test1"
},{
"recipientNumber": "27828726334",
"message": "Test2"
}
]
}