{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "223261807",
    "entityType": "User",
    "nonce": "0xf97a40e7d1366c6398b8a2f72ea03b98dca9b34ee134504fad104e776aa892c2",
    "signature": "0xe8833284c870126700bafb6749928103d6a910db7102e53890a764598a1faead0d5c6543dcc17772c2df0090305a678f32fc587a5fa5f069a9466096bfb869741b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}