{
  "manageEntity": {
    "action": "Save",
    "entityId": "1818165763",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8bf15772a7c28b3580ac9d0305f34bc8288f4004593db2fd26a5fadee866b505",
    "signature": "0xd49a6e3d458f8e1cd893d03885041c31341f01c7d52ed3bdb7764342b934bb091aa97aa71c80febc83e0a867b2a10bfeaa1be0a1fffa99b8d4cc5dbdea26ad761c",
    "signer": "0x65E206f484415ee5E20E9B8da531F689983C6e36",
    "userId": "718637748"
  }
}