{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x79a754e0b198d9fe14c79ed57f7dec22e4faa17ded6e75fc58d74d6d6110aaf5",
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    "signer": "0x452136c9843a1ab72B758B9cAb217BEff858Ab77",
    "userId": "825636807"
  }
}