{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x45d52d262581c90fa43cf7af7317b5321e6c703bdc4324cb29a062a93a776cdc",
    "signature": "0xea017ae14b3e8272eb5c1bc7dd1c06d0fc4762b722dc021e6ad0e69b0f17eddd1ddb1d40fe5ee6f54ff0961d7c9fc095a6e45fcc5054673929f2fe541adfbf9d1c",
    "signer": "0x6479d9720713f53dc89A54A1b2812731e2cF028d",
    "userId": "159329749"
  }
}