{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143924",
    "entityType": "User",
    "nonce": "0x914def2e554f8825982672d702efe2055729d97d7d1a3afaa2dad501b5433908",
    "signature": "0x00592ad8922ad03089b6296f0d9749f8e65aa1bf1914e31c8b7c770965f4d8604b01fc2a5bc4443a591eb260ed7d71c43d823da626e2274031906ad0669399851c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}