{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe8241b9475fd05d9b0b1954f80825f54c3e1eac54c1d3cf83e9493386ab049b2",
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    "signer": "0x7f590bEFD43b7cCcF038372CE50C813B4290A5f4",
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}