{
  "manageEntity": {
    "action": "Save",
    "entityId": "119927",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd43a8730ba05de5f5b79d28f539c9dd792a1931759876a24e8b02b191f4d51a9",
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    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}