{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb8639dc3bd8acff9aa0b54048ce8bad9198f2445953cb648fdf5f4e41b7965cf",
    "signature": "0x98f1ff9e926566272225a7ea242bcd82ea02fd2219936f9e3ae1ea64840289fb5764a96cbdee212d6ac4055b09a2c7a13ffce52c6613aa6e35a46e6cc9526b2c1b",
    "signer": "0x0B1CaaEC70b5bFA6AAD662f63772B90D1bAaf807",
    "userId": "637177784"
  }
}