{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x59d2ed521ba0655a295a7a6ce62256e74e77e5b938c7120a238302457abeb874",
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    "signer": "0x1357C975771Bd93b642d21c48Ef731f652C4033B",
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  }
}