{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5155954976309ee9333919e167f735a2dc87ca464c256ac13ec5fb2caa8d19ab",
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    "signer": "0x7FEF5d952f7FB3EF06D25Ea2084E4DFA08550aa0",
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  }
}