{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154815",
    "entityType": "User",
    "nonce": "0x2c1ef0bda9175b5ccd42c6153ef9b524df954d2323fb3f612030d411a828452b",
    "signature": "0xa240d0cb0190679013505a26fc2a98ec01306791715f1ed50cf9e1794a5f341f7102e0a4a19a813e6587a5a28263e69cf1083afc38e4608067d002b2d0bd211f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}