{
  "manageEntity": {
    "action": "Save",
    "entityId": "806977433",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5b65718a6368682db7f9c0adc10047b9ff4194e4ed8d285d9e78be8cf06a065d",
    "signature": "0x0faf8d0f994e199aefee2a60d52634bbcf527d7a7c724d847937ae3d057797de6f5a2723bec9e27f2dd86e8f076b27f10eaa29600615ac12a8cb7a13815025371c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}