{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "531528720",
    "entityType": "User",
    "nonce": "0x2526b671d501aac03a804e034310a9cacaffd88e6f0bb799e29d35929363c51f",
    "signature": "0x9ddb07e836cabd5004341110756ec1dac917387aff9f299e6b31b7ee608227b70cdc3edfde88863b42f1ccfda3a3facf5e009c291ed3147afc3825b72385e2461c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}