{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "546586112",
    "entityType": "User",
    "nonce": "0x40a437541b04b1ea13c8f14d2d4c338ee157124cd4071858091290aa2d0a8c1b",
    "signature": "0xff89585699e9c08919ccb7970260729a5afea03d0830c0c4c984a035855bd36a4ed63b2411eab3929f7193ead91c4e349579494b7fbc7010a3331a7296fb9a911b",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}