{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "372325",
    "entityType": "User",
    "nonce": "0xdbffad5e6e6f7170b3e04a4a0c34313662da87b8ffb983644ef44e702547797d",
    "signature": "0x44a0c556f0b556c743be1da7a6c48bfa6ef1109ffc25bd75622e447b1e80c91e259a482e583f9a98cf844b04a7df2d5dccc3476351a1c4148acf64fc59fd52711c",
    "signer": "0x2B2E9550F4B942405D45c3F93C3D91Bc20DdfC5e",
    "userId": "644941151"
  }
}