{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x95f756f1b310f33a03354a374af4733324d2eb3774ed0fa256c9a5a5c4034d52",
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    "signer": "0xdC3259a4db5A8697644164ebA1621FC6A4C37488",
    "userId": "792349587"
  }
}