{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "543019271",
    "entityType": "User",
    "nonce": "0x0814a1490d8e99a93d3a61058a31ab0256882ea9e57540cccb0070a387aac0d9",
    "signature": "0xc184faabdead2055f080c83608ea2a81d80ba74f622b1a6c5286a5177442b8c2480dfbc17ec0bbd5e4383a7980e57cbcd1c5f2861c53afe2c662a12f719e88e91b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}