{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x5bcac004d17733044c5641fce28bad6bbdeb20903a72a8a0f57a7c5258294445",
    "signature": "0xd5fc5687234d2031a1c495df5bb9df388f2487e8d4cccb664e8e29c25f9a49dd63d6ac11d68f80c9f8579f0666231118ca6e222fd138ae37b6fa75b46c1729681b",
    "signer": "0x1011297FAB27Cd869ba8313983bF4793AB784705",
    "userId": "540848139"
  }
}