{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2650d1db3a8e4ee433fbc55c196503de357cb70c7e230333c5c5ed6c5a30d31d",
    "signature": "0x7c2d7c757e3ac0099b9b27719dd46977cdb8ca382f63731e652f4abeea5be6d2347f2966761000558a8eb4211edee5f4aea37b8ff406b90a57ede360176ac9d81b",
    "signer": "0xeDD950aEd4449FACC7ecE9df1c31be536A0b4E50",
    "userId": "306517740"
  }
}