{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197822364",
    "entityType": "User",
    "nonce": "0xb2e3c270bf89d4fe5834a75cfd56c139999dde131050daf03777f5fc3955003d",
    "signature": "0x71b8497ca81ab5ce62ca0e5536ea00bca90447e198b9bb701bb8ba03c32602ca613cdbbf23699758ae821c57a073e7790e89814315679582599f26f24750efb21c",
    "signer": "0x3F0C6C0F7190d14ACf18bD19Dfb99E4C9E8f5893",
    "userId": "139092916"
  }
}