{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "153471",
    "entityType": "User",
    "nonce": "0x592be9dc0d621f3de3bf2782bdd7ad06ae0df78cdb54e2384cfed8f821884a29",
    "signature": "0x387cd10953b79adb4fb52b472bba0f68a79e97318c090c5b812368093332bf492238b3d50d4bc8648dbe8be30362fb2643595f208cb5fb4513e9ba667532f95c1c",
    "signer": "0x2019E1bE031e04Ee9B2CeDc86DFF51d1DD7C45a8",
    "userId": "906542957"
  }
}