curl --request POST \
  --url https://api.vzaps.com/instances/{id}/chat/send/buttons \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "phone": "5521966332211",
  "message": "Olá! Para direcionar seu atendimento, escolha um assunto:",
  "footer": "VZaps",
  "buttons": [
    {
      "id": "sales",
      "text": "Comercial"
    },
    {
      "id": "support",
      "text": "Suporte"
    },
    {
      "id": "billing",
      "text": "Financeiro"
    },
    {
      "id": "confirm_yes",
      "text": "Sim, continuar"
    },
    {
      "id": "confirm_no",
      "text": "Não"
    }
  ]
}
'

{
  "code": 200,
  "success": true,
  "data": {
    "message_id": "90B2F8B13FAC8A9CF6B06E99C7834DC5"
  }
}