{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1438b8807ee301a9abb8a819ef7b2c55f42b70c6221911ed4dc2f0b797838fd1",
    "signature": "0x7db2fffc78430150e3d9abfeb27922ff77fb7cc0cea5f475b1fa2d2ce6a877374ce3b3f2f6182806b73bd17d9d337cd04ff4ca852b2fb30f1ec883acaa41a57e1b",
    "signer": "0xdf66eEfECb2C28Cd9206425cB401d2972059a45f",
    "userId": "634852376"
  }
}