{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfa960ea47d06ff01c37adf2f89fec478a9e63bf85b6b5fd226a7998729093900",
    "signature": "0xa6c3f976e9e2257d1a41fd7d277502a765a05368c580b9b146b634f22c2ef303479f0753608b7aa16818b9948b6e15a122b982bb3c2fc0bcb011d84669f829791c",
    "signer": "0xc005A8D5287AC96e322941D938af2B5da07a5366",
    "userId": "494816345"
  }
}