{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xd04109c5a25096944574168aaefdb84680f2e439d0556d6f27cffc580772d476",
    "signature": "0xdf152eb508cb198448d29da17338b5ca413d928067f9208761533d517e2f27f519d7d1562fe3567f81feee66532d33b7bec5540cfce212ebe4e1c54943d2918a1b",
    "signer": "0xb15d7053c985Edf1d74fFc9893ab67Fdc2B33090",
    "userId": "211545300"
  }
}