{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x45f31f8dcd215fa1454704c17abbb77c7601fa0c6d07ccf72c23c36547aeec91",
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    "signer": "0x59b6242FE7db035cd9545ca205b208b5fcf1CC4D",
    "userId": "806603339"
  }
}