{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "910859044",
    "entityType": "User",
    "nonce": "0x4120806aec8c5f290eee714fd744c984d4ba7b7db2a3e3345a8134eac0bb1505",
    "signature": "0x728a22b10008b093741ce6ca70487a8d5d8aa29d8b73d8d87b01887c6dc6a21e4032f7d6ef0f7f6722b15ee2bad62d29d22de689d56bd455165d46fcad05aaad1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}