{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x15cdf97b84f8603688f030076dbd4ff43fe267dcf6378898ea070652efe1e3e2",
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    "signer": "0xAa41F58040c332bA099e607a94e779E0eaAd70a3",
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}