curl --request POST \
  --url https://dashboard.hologram.io/api/1/devices/tags/{tagId}/unlink \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "deviceids": [
    123
  ]
}
'

import requests

url = "https://dashboard.hologram.io/api/1/devices/tags/{tagId}/unlink"

payload = { "deviceids": [123] }
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({deviceids: [123]})
};

fetch('https://dashboard.hologram.io/api/1/devices/tags/{tagId}/unlink', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

const url = 'https://dashboard.hologram.io/api/1/devices/tags/{tagId}/unlink';
const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({deviceids: [123]})
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

{
  "success": true,
  "data": {
    "tags": [
      {
        "id": 123,
        "name": "<string>",
        "deviceids": [
          123
        ]
      }
    ]
  }
}