{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x40aff9a486c61cdd85b75108c0797e1944720e1474e25c062448143b37b284f3",
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    "signer": "0x23d55e4F7A8b0F1337072Eb2e5578687000c7566",
    "userId": "737800476"
  }
}