{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "768479471",
    "entityType": "User",
    "nonce": "0x4967fd052baf3c71523fde259d4594c479f1cbbfbf464133fa73927d41d16990",
    "signature": "0x65b283db857c21dbc12de1e5115dc296e38a17096bfa108289846302193df03832bdaa0853bf6183d4d1c7830c8c2b8bbe95d33efa70d9535204c1154998557b1c",
    "signer": "0xfa1f98f0530E55C2BEFA45f0F1B3A699b4559136",
    "userId": "149566028"
  }
}