{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "734268",
    "entityType": "User",
    "nonce": "0x7d182ec4e27f6eaf8b6f5a5ab494a4d598241fb78aa02c4015b8f7895756805a",
    "signature": "0xef5152d0de882e41b4765230de665d72f8e16afbeff1e83cb057e4c8ff4202d72c90f390939739c7ccd8b4c1d6049578e83c68fd433956b7800bb812085260a71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}