{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "339050",
    "entityType": "User",
    "nonce": "0xbbff8a6c2bfc318b0f444bd078053b9d2d9c6807ddf52c1c40892f6956626caf",
    "signature": "0x42350dbeb017b7e77973b215daa15877938d353f27190ad601a6c4b1d1e2e18043287dd81d62267f7b6fc8eb8eae118803e71b0ed1145efcb0cec468949914871b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}