{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xea77a43104afcb8a18a3ca8703bdf6d69c5befe253f03d476f64973e7e6c793a",
    "signature": "0x1c983ea289facb79658b29172388ffa79f256cca1a4bc133f2e455abd7ef96cc0c705805eba45663fa170c7b021a317ffd8c94396abcf20ca2e8ba067023dda41c",
    "signer": "0x536d6C3fe1604AdDF6acf40Cd65aAC6bDcAed073",
    "userId": "582491184"
  }
}