{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "752732",
    "entityType": "User",
    "nonce": "0x3ffff21c387f42a81eba732946266303e1590babefe9394d27d282f3475432f0",
    "signature": "0x06db41071921cf442e6e826893337f600de77eac84abf2fd22387a2502d6b3d33044244ba906fe8086bb588ca45d4fb15d6ad543e1a7b5d267073c131b390aa71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}