curl --request PUT \
  --url https://api.hubapi.com/crm/v3/pipelines/{objectType}/{pipelineId} \
  --header 'Content-Type: application/json' \
  --header 'private-app: <api-key>' \
  --data '{
  "label": "My replaced pipeline",
  "displayOrder": 0,
  "stages": [
    {
      "label": "In Progress",
      "displayOrder": 0,
      "metadata": {
        "ticketState": "OPEN"
      }
    },
    {
      "label": "Done",
      "displayOrder": 1,
      "metadata": {
        "ticketState": "CLOSED"
      }
    }
  ]
}'

{
  "label": "My ticket pipeline",
  "displayOrder": 0,
  "createdAt": "2019-10-30T03:30:17.883Z",
  "updatedAt": "2019-12-07T16:50:06.678Z",
  "archived": false,
  "id": "812723471",
  "stages": [
    {
      "label": "In Progress",
      "displayOrder": 0,
      "metadata": {
        "ticketState": "OPEN"
      },
      "createdAt": "2019-10-30T03:30:17.883Z",
      "updatedAt": "2019-12-07T16:50:06.678Z",
      "archived": false,
      "id": "1234912"
    },
    {
      "label": "Done",
      "displayOrder": 0,
      "metadata": {
        "ticketState": "CLOSED"
      },
      "createdAt": "2019-10-30T03:30:17.883Z",
      "updatedAt": "2019-12-07T16:50:06.678Z",
      "archived": false,
      "id": "1234914"
    }
  ]
}