{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x57677c24180f0117adefa9eff6e208105456ece5dc4d4159fb9cecdc032c7f9b",
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    "signer": "0x06cF7317996b04C355166a1Bac5540986622FA4F",
    "userId": "175778563"
  }
}