{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "157322",
    "entityType": "User",
    "nonce": "0x4a9c4e61f749353a9ced73c5e78a79f5efa3b8250a4dd81d10bda107cf89f708",
    "signature": "0x90948ff77a92c607cdfc80f4609cc28591fdf77c7ccf1d4db81fefa29b6b68ea20309eff7de30457d3b11d9a84830eaa2cc5da28e9860dfd81018053ebca91cf1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}