fetch('https://api.belco.io/v1/conversations', {
  method: 'POST',
  headers: {
    'authorization': 'Bearer <accessToken>',
    'content-type': 'application/json' 
  }
  contentType: 'json',
  body: JSON.stringify({
    "shopId": "QCKysMML2DRfxW37G",
    "channel": "phone",
    "type": "follow-up",
    "to": {
      "type": "customer",
      "phoneNumber": "+316123456789"
    },
    "tags": ["Sales"]
  })
})