{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x35f3d68881a95968763a24b470f934f235b9c6c791f43dd46def558238d3d71b",
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    "signer": "0x2881CC161622bC647b88915D64A5354a85Bdd555",
    "userId": "64534769"
  }
}