{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7fb3c6816665bf81e32038c71901542354e8e7b4ce51de3cd632a122c1ed2289",
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    "signer": "0x6dd2A130aB471549462B10418CE22832cEC4F940",
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}