{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2cc3f707e38f9165330f59197f2cca9363155371f686bf0d2fed178d69b91c36",
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    "signer": "0xBB09642830EfAF0bC97708D705A85C90241198A9",
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  }
}