{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8a469ec35c1de594d6b27868c6008800e69b610c0f65dfcec9ae69c82816f583",
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    "signer": "0xD04Fb510ECb6f4B299f89d140Df7De46434E97F9",
    "userId": "279870150"
  }
}