{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3ad831f26283bd2c7e20b8325e4c92733e48a30acf11796ab46084af9b78ea7",
    "signature": "0x31d32b2fd752cc110087a9c6c5dc0e2eae19ef3c48ef889417477c93437d40923580dfa4ce730c99a003f9e822dbce51233645da19b67cabcc1cf2717a14fd681c",
    "signer": "0xd422761AF724fA5b5ADc74344849703223FD5D2D",
    "userId": "445263420"
  }
}