curl --request POST \
  --url https://api.getcargo.io/v1/storage/relationships \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "datasetUuid": "<string>",
  "relationships": [
    {
      "fromModelUuid": "<string>",
      "fromColumnSlug": "<string>",
      "toModelUuid": "<string>",
      "toColumnSlug": "<string>",
      "relation": "oneToMany",
      "uuid": "<string>"
    }
  ]
}
'

{
  "relationships": [
    {
      "uuid": "<string>",
      "workspaceUuid": "<string>",
      "fromDatasetUuid": "<string>",
      "fromModelUuid": "<string>",
      "fromColumnSlug": "<string>",
      "toDatasetUuid": "<string>",
      "toModelUuid": "<string>",
      "toColumnSlug": "<string>",
      "relation": "oneToMany"
    }
  ]
}