{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "37450",
    "entityType": "User",
    "nonce": "0xeccd83fdcee13e14365a27680f4a64e9556f443a8e0053f1c1395cf9a54a72f7",
    "signature": "0x4777f0bdb0e367fff00dedd4a7ee8a65baf9279dd406337c50476a372725277a77bfb7f06d03736bcebd1925b6927984d6352f425cddf85a9d60b124742108501b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}