{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4621",
    "entityType": "User",
    "nonce": "0x7bc74c0b4aa28862d31f1125628f6af6937d2f4fc01a9719c87d21958feaf628",
    "signature": "0x36eb04af18a321c6c42eee9fb56baf884996db9120335459ecfa43ff822e799b3099e2e95ddd81832948754c5c196800b1213879b1e00880b1aadf6ef37a914b1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}