{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831117417",
    "entityType": "User",
    "nonce": "0xe39172538eddb586f0dfd976c0181e54346281f12fe4c21167225fa16bb71530",
    "signature": "0xbcda07abd67cb4d3e21e810d1a9ce3f2678e67b629032cdb77da61d9919ca1706b2fa6f441492bc63ee3c1cb7e3e000f8c320b8926556df0bf1472e0972b57931c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}