{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xaab25ed62b19766a4dc97df8e8c0b7db9c9d883a1e5b66bba2c94791b8431cb2",
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    "signer": "0xba95Bd83fbE75024CfF58710313684f316248fB0",
    "userId": "30178579"
  }
}