{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1c055d6c694d787ac8d86b5ad50df6b9f47d814825c9e82fda11e4ddebc1b45f",
    "signature": "0xd2c2ed8742d22b5ad9389d88847a132c98957f9e056b45e91e536e9cb64d506f7589a57772e462febc13373397d7a768a2687980f74b53ce48a83e3b36a421f01b",
    "signer": "0xea757ff4Da161Dd9F610Da35a96cEe6986ff8a80",
    "userId": "134193257"
  }
}