{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2515",
    "entityType": "User",
    "nonce": "0xcb4132c57dbadac42694805d5fe8e3e8f6787836041f280cf480a13416719e52",
    "signature": "0x61951ce782f144899f3a084ec219615d2778b1505e6bbc020a4f024f70be153f77260c029dea6e8eae748bc62f9887b2b594507987c204b34526e9456f392f561c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}