{
  "manageEntity": {
    "action": "Save",
    "entityId": "1320548787",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6c3ff430e1ec849c05d8a67f65673910ea2bb824a1db5316e816d5504ea88470",
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    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}