{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "770725415",
    "entityType": "User",
    "nonce": "0x131e3d581969d5280700cabd8941c6b49b57244c3d92bc617a64a15d6d1ceb96",
    "signature": "0xe422eb739edba8c32bff040eaebff1a4bb91e8fdf9b76191ea04f49d9a03a6cf51dd4ec37658fb26dfd27626474d60d3f45b85c09112af404fd9aee28e1436e81b",
    "signer": "0x12EaF77464824447aA995e75Dd707B3e5246be9C",
    "userId": "409175645"
  }
}