{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6c3dde217b6b9f993ec44f6ead40602944414fd5280927de0edd4b11e9e5336e",
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    "signer": "0x000fDf1C4AbF420F755A036b16C19D32d65fAF09",
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}