{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6e53c72b59e540ed14e33b04affa5e9b9723afb9656f06ddc6074e4d44e7b75a",
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    "signer": "0x1aafa472357705B19d36EA7090918e7B33bBF70e",
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  }
}