{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2b44e8994f1cdcbc4d93a5112755a48961c6230f958641d2ebc8bc55d1ffc8ac",
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    "signer": "0xd53B1771B904e1c51c6548a358eE6CCB545A717f",
    "userId": "232384371"
  }
}