{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9842d1b757b6d2dee34bd8fde1eebe02bcdf7eb10868bd00de9b68fcaf57ce14",
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    "signer": "0x05950BA6A091866786bF1211B0167d8F18D6325d",
    "userId": "565259717"
  }
}