{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "939113546",
    "entityType": "User",
    "nonce": "0x5f1e8d180caf80451383f114e853830a4fa312d75191b5f542245fae03d9f321",
    "signature": "0xf004c82c11c0a58c1f77e2157e195ebeec955a557dec74833ef35a147f63f00843eee9be5e587fdf59a56a996e73b777c6062a0c19e56db7a0e06fa138bfaad31c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}