{
  "manageEntity": {
    "action": "Save",
    "entityId": "30281002",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x54482a0d88c5d1c14e05f085d3867e4effcbb04cb26ffba084c56db29390879e",
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    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}