curl --request POST \
  --url https://api.belio.co.ke/data/{campaignId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "disbursements": [
    {
      "phone": "<string>",
      "message": "<string>"
    }
  ]
}
'

{
  "requestId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "units": {
    "Safaricom": {},
    "Airtel": {}
  },
  "addresses": {
    "Safaricom": 123,
    "Airtel": 123
  }
}