curl --request PUT \
  --url https://api.decodahealth.com/user/patient/uploads/column-mappings/{mapping_id}/set-default \
  --header 'API-KEY: <api-key>' \
  --header 'TENANT: <tenant>'

{
  "id": "<string>",
  "name": "<string>",
  "isDefault": true,
  "mappings": [
    {
      "id": "<string>",
      "groupId": "<string>",
      "csvHeader": "<string>",
      "mappedField": "<string>"
    }
  ]
}