{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "651365789",
    "entityType": "User",
    "nonce": "0x7d8c3853580c4660519b74ab0505bfac7100329aa008e4f97643524b06d54fb3",
    "signature": "0x505138d38572b811d0214c9b04e6cf250396479e3ecd0802ee33938765da6f3f5e5853cb6bb23cb64cc6ceaed891bd9f70af6ca7eddb8e6547e31936095e6b9a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}