{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb2aef0cada621f0fd9d6dab682f66856657bb71cee7d6a3ede6e6b7ba35c2eb6",
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    "signer": "0xCb76d1FbF2fB7395bc265565bD8dA26F7b76c976",
    "userId": "972578736"
  }
}