{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298566",
    "entityType": "User",
    "nonce": "0x82ccc4d2c1b82516d11ba37867ae006ddee1b79a6db6f9e6f8e0e96ca111bc09",
    "signature": "0xa63e807e66d76fa5c9e41a41e3a90dd8aaa13b5afb462ffeda5ad774226a146e6c8cc52793902d1d12e69973a59b204bfaa99d99adfe7e7e9649c75921fd9e461b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}