{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x41e456258a24bab34e6d0a91e4c48c5c02ff447d94b03500d211353c03a673f8",
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    "signer": "0x3c02EcdE7970B3CdBFEd337A0d38Bccf450e3Bc7",
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  }
}