{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "81480",
    "entityType": "User",
    "nonce": "0x16ad6120c9e4d5c00a6bb1d3ca705b19c227ea4cbc45aeec8b960ff57f2b9626",
    "signature": "0xb552023a6f891c68342d0c10007c086e7aa6e3a3ff1aba2cdba5b4bb7c10901d128593abe34ca3332e39f991f3fe681c4d98966ee1c728a1246129a9966290661c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}