{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8e93e99b8546022ce06482a21c6fd3b438d04931fc6ba701e73b08a1d6e448de",
    "signature": "0xee6cc7341fdf5e5f50c4ea7c0a5281fa8ad159382d3580e675c92cf4845c772a1ac92f2440772135d989703f4d9be621702929f087d39358b59e95cba24f23c91c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}