{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154589",
    "entityType": "User",
    "nonce": "0xe5885a90b168181affa4a2b5bc9c967933d38243566fa5a9a8ae83f353ece81e",
    "signature": "0x8860283eda751343628a1d8e4093e37090a509cfe040fc9de8cd71d81f01607e3d0c6f74699563e139841e24bf038559f0137e134ef5cfcb498bb3b2346f65ee1c",
    "signer": "0x16eC1CF4f324EACfAa9D3F0D2add22A0e775fb3f",
    "userId": "392894187"
  }
}