"hei hei" meaning in Finnish

{
  "etymology_templates": [
    {
      "args": {
        "1": "fi",
        "2": "hei"
      },
      "expansion": "Reduplication of hei",
      "name": "reduplication"
    }
  ],
  "etymology_text": "Reduplication of hei. Compare moi moi.",
  "head_templates": [
    {
      "args": {
        "1": "fi",
        "2": "interjection",
        "head": "hei hei"
      },
      "expansion": "hei hei",
      "name": "head"
    }
  ],
  "lang": "Finnish",
  "lang_code": "fi",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Finnish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Finnish reduplications",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "bye-bye"
      ],
      "id": "en-hei_hei-fi-intj-~mNYd~3u",
      "links": [
        [
          "bye-bye",
          "bye-bye"
        ]
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈhei̯ ˈhei̯/"
    },
    {
      "ipa": "[ˈhe̞i̯ ˈhe̞i̯]"
    },
    {
      "ipa": "[ˈhé̞i̯ ˈhè̞i̯]"
    }
  ],
  "word": "hei hei"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "fi",
        "2": "hei"
      },
      "expansion": "Reduplication of hei",
      "name": "reduplication"
    }
  ],
  "etymology_text": "Reduplication of hei. Compare moi moi.",
  "head_templates": [
    {
      "args": {
        "1": "fi",
        "2": "interjection",
        "head": "hei hei"
      },
      "expansion": "hei hei",
      "name": "head"
    }
  ],
  "lang": "Finnish",
  "lang_code": "fi",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Finnish entries with incorrect language header",
        "Finnish informal terms",
        "Finnish interjections",
        "Finnish lemmas",
        "Finnish multiword terms",
        "Finnish reduplications",
        "Finnish terms with IPA pronunciation",
        "Finnish terms with audio links",
        "Finnish terms with redundant head parameter",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "bye-bye"
      ],
      "links": [
        [
          "bye-bye",
          "bye-bye"
        ]
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈhei̯ ˈhei̯/"
    },
    {
      "ipa": "[ˈhe̞i̯ ˈhe̞i̯]"
    },
    {
      "ipa": "[ˈhé̞i̯ ˈhè̞i̯]"
    }
  ],
  "word": "hei hei"
}