{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881508",
    "entityType": "User",
    "nonce": "0x31e1d87922b7ae62df7c7356d256dc41729eb942007c3e261f34738e30038c53",
    "signature": "0xfa08dc7ea1695dda3b756f13f6d8839fab1db34b3691f5a39754e2b9cc9765740867ad67ea0fef4ec7f3a95de3e594089a566d9b87c1308467c91be488b5e5141b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}