{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308828",
    "entityType": "User",
    "nonce": "0xf753c87be15b5674d380c688199d9805627708ff37c497c5956f5e8500799c0b",
    "signature": "0xe8ebb02df95907d2199041ef8d37034d2a84eb195ac35492fc44052a2a887f3074554abcc59853cd131ceb803e68bcfd5513fb12f6397280a9e795c0f4ba31b31c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}