{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "29401",
    "entityType": "User",
    "nonce": "0x69e552e780bafd680eb64b2e68055a485666042072ff99f901b1916d8b89f7ef",
    "signature": "0xce74a28422748b531fcbd043c7d0b8aba65f1d6d952fa9cf84ac544f0ec60c62548600a6b23a905cf9e1d74a5242cb3eb5d0f010698c6962b3c2d9e05a984e4d1c",
    "signer": "0x75a075dd45bE38AA2c27754D97d5d84dD624FeA5",
    "userId": "451351"
  }
}