{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xb381ac4d62d47a84cd08f0af5f71ffddb5aed54c0885fbdd9ac393d7d5bbacd5",
    "signature": "0xd92c8890f0038c9d8089d68146133a1c5bf6175bb4c5961a425156fd19ea11927fc62b80331409004c7f2e2e78f69c6070c915f97aea1a70e3a9af8189fdac491b",
    "signer": "0x225A0F26D8c354e4B16725295bDabb4983d0F6F1",
    "userId": "994175139"
  }
}