{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "270309",
    "entityType": "User",
    "nonce": "0xc120b29bc4e5fad5c5f941a6a04bf30bd37a47efba4393a987d2fd7cee50c611",
    "signature": "0xdb53c3c0b3a4971e860aa55d41212fda8753cd80feb6634d2a84826c2c5cc4831c3e3651592c3a864a4d16065a976a7864d18dc611904be49f1c23d5c7597d251c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}