{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcc103fc337bd7d588a1e0b2df5de45394175a54de7867785dc54ce23b119341e",
    "signature": "0xd17124ce1141cfbef22f742612878c76d9b9869eb2014197ac76fbc72ab1add414ab650452438b986188891dfbe8fd71fde169566bc0be627d5ae7142daf013b1b",
    "signer": "0xe73dEC83fb1FFbb74b846Ebe43FD299DFb3371E1",
    "userId": "225142146"
  }
}