curl --request POST \
  --url https://app.octavehq.com/api/v2/brand-voice/toggle-default \
  --header 'Content-Type: application/json' \
  --header 'api_key: <api-key>' \
  --data '
{
  "oId": "<string>"
}
'

{
  "_metadata": {
    "requestId": "requestId",
    "timestamp": "2021-01-01T00:00:00.000Z",
    "usage": 0,
    "message": "message"
  },
  "data": {
    "oId": "<string>",
    "createdAt": "<string>",
    "updatedAt": "<string>",
    "name": "<string>",
    "deletedAt": "<string>",
    "data": {
      "title": "Enterprise Brand Voice",
      "description": "Professional and authoritative tone for enterprise audiences",
      "personality": {
        "coreTraits": [
          "Professional",
          "Authoritative",
          "Empathetic"
        ],
        "guidingPrinciples": [
          "Clarity over cleverness",
          "Lead with value"
        ]
      },
      "tonality": {
        "soundLike": [
          "Confident expert",
          "Trusted advisor"
        ],
        "neverSoundLike": [
          "Pushy salesperson",
          "Corporate jargon"
        ]
      },
      "vocabulary": {
        "keyCompanyTerms": [
          "Octave",
          "knowledge graph",
          "GTM intelligence"
        ],
        "keySubstitutions": [
          "Say 'revenue team' not 'sales team'"
        ]
      },
      "writingRules": {
        "languageRules": [
          "Use active voice",
          "Avoid passive constructions"
        ],
        "formattingFundamentals": [
          "Short paragraphs",
          "Bullet points for lists"
        ]
      },
      "audienceConsiderations": {
        "qualitiesAndCharacteristics": [
          "Technical decision makers",
          "Data-driven professionals"
        ],
        "aspirationsAndBoundaries": [
          "Want actionable insights",
          "No fluff or filler"
        ]
      },
      "essence": "Clear, concise, and confident",
      "customFields": [
        {
          "title": "<string>",
          "value": [
            "<string>"
          ]
        }
      ]
    },
    "default": false,
    "user": {
      "oId": "<string>",
      "firstName": "<string>",
      "lastName": "<string>"
    },
    "workspace": {
      "oId": "<string>"
    }
  }
}