{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x613b7d6efe20bfe04cf83cccf27254fe9e6d13529d2e869d564bd21612ea4748",
    "signature": "0x13a383ef6acc7c674955134436c5b8b4af65a93bb97aedc3c42edb59533fc03f49726c1e547ac8daf61b851ab9298bfa65b7a1f4fad63d5c29cdae601ab361d91c",
    "signer": "0x80E8905Cc722aE1c8F30F93992232E504B4CE189",
    "userId": "221295278"
  }
}