{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4dac41cfe48aab3c9ad5273f04932c99862ca68e144746b9b9aaafa197c24714",
    "signature": "0x41d287eb11d3cd936ed6c2cfa8ab8fa0ea6fc31e71566906015b6be63601a3ad14011c8b130808b72dde74f0bd46c46531e6511ef11c52227e689bb6fbbca8901b",
    "signer": "0x432E5e6fCa3741b3815538c5227537eC28fdBBa8",
    "userId": "528014408"
  }
}