{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcf70c2499b1873f5c4ebba059b5b7dbf05af1e5b08438c9f8353f5726a020216",
    "signature": "0xf14edffc570c4939116c2f48165735a6474f418b6e01b2a80f25b0295206e23974db97276590e61e93a1d5fb00b60c4c63f9d0dc74d42ae6a903a449eddf24aa1b",
    "signer": "0xF3E0d3CD6bed89434d9B53ff815Fb8FC324e6F6E",
    "userId": "669735841"
  }
}