{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6502461cd4649c787f094a26a8e6a8473f0cfb61f6c48eb22b7e825d9ad4ea10",
    "signature": "0x0b00f3285d7a66a8095ff92e1e44109920493a8dae81d98ed77d98571464a3420cf192d75866a8b3fa145e46602f976d4f44b6c9681d75751ff822f39bf4f9221c",
    "signer": "0x530E0389C7352Fb2d85d2CC319F68bC2df8C4392",
    "userId": "874338785"
  }
}