{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6e7cfeaa56b0b2a223c42475d0a6d872a19cc55964719adfb3da59105c14132c",
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    "signer": "0x692047A153aC0554dE74a24AB8012BaeA526f272",
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  }
}