{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "776994971",
    "entityType": "User",
    "nonce": "0x30088e213094c5b8ffd4906e06750a79079084cb50cf3f8b4281472969d5fca8",
    "signature": "0x0ea1aba832ed3b94bb8cfd165e60771b3570e91d994e860dccdaa79307c07c173bc60a9c27f671c2c684ad7a57d31175ea62c4df96dd78d723929c9da775433f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}