{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571769298",
    "entityType": "User",
    "nonce": "0x9751a0e22882350d1cbe49a57d8c4ff3c7fa7ad2be667fe560909ced61bf7c06",
    "signature": "0x6c946337e0b8a4995f9862e5b381f5eaab02b49de9995f3336e87bc24cfd36b45f1857d1a4cf9ee3393ec67227d268c3f3a59bc085e867d1e0024ec3e071070f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}