{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb22b578f8913629404cc4a73d4857242dc61d1981825d45487feada6fb681e98",
    "signature": "0x396c6593cb2736c61f8e76349313db3bae51dad56c28b1d11763a2e4f4412a8a1cf39169a22d50dd03e571950b6a018ba49794c8e4e1cb1319700fac228ed6c01b",
    "signer": "0x2e1Cb3644DC0693bAF3Fe570Db536775d66210bB",
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  }
}