{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x09985b42a200cb29a2a032cbbf5eadee4a8c8c344d9fcd68189853e55945dc76",
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    "signer": "0x4E683ed70DcfbA9b223E24954Fc9c366C86a4228",
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  }
}