{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "581700621",
    "entityType": "User",
    "nonce": "0xdaab760b64bf33ec307441a628786dcb6e6e2652f794f4aca0df0765a31ba2e3",
    "signature": "0x1ecf4c36aae66beadf71e0b0cd663a2dc1955dab606a23ba288076d766d34de32559dac2c6dfcd3d743a4a66821f9189d1c47c3c321c59d9519c0fb1dfbbfe9c1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}