{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x05ebda08a4509d78a196ad865b5b848603bb14ab65e10b58f544d19f961d04d6",
    "signature": "0xd0da77707b6c5f1fddec8f680c69ca33cc1e3ab73ddf29c266dade01c4db03705b912d63a4d564e419d89d8af3b6c71406a25cabd8fa5e5c856db3b01be3c5d81c",
    "signer": "0x2E421648958D2Eca9f5AA96E378e89773A0f1Cc8",
    "userId": "683894975"
  }
}