curl --request GET \
  --url https://http.us.breakcold.com/api/v1/crm/fields/{fieldDefinitionId} \
  --header 'Authorization: Bearer <token>'

{
  "field": {
    "id": "<string>",
    "workspaceId": "<string>",
    "objectTypeId": "<string>",
    "slug": "<string>",
    "name": "<string>",
    "fieldType": "<string>",
    "isSystem": true,
    "isRequired": true,
    "isHidden": true,
    "isMultiple": true,
    "isPrimary": true,
    "order": 123,
    "createdAt": 123,
    "updatedAt": 123,
    "description": "<string>",
    "isReadOnly": true,
    "showInCreateModal": true,
    "defaultValue": "<unknown>",
    "validation": {},
    "targetObjectTypeId": "<string>",
    "relationDefinitionId": "<string>",
    "notifyOnAssign": true,
    "defaultValueTemplate": "<string>",
    "isComputed": true,
    "computeExpression": "<string>",
    "isIdentifier": true
  }
}