{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "782701593",
    "entityType": "User",
    "nonce": "0x1722a245d2313a905086877f9b35d0ec681b4f7b04c36fa4009ca320fa0bde8e",
    "signature": "0xa770b302b761b6c8210359d87e80df1cb81dbfc2c11927637a2891983725e0296d168d837ee01b7d825c7d8d62aa643049578926c39aebe70b39df85dc38bb3b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}