{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe6dc011db1047f7844956b7e0cff3e6305707322708e84292ddf8b8054f23420",
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    "signer": "0x78DFb3273C763696A43106907732780CF2A4431d",
    "userId": "677555125"
  }
}