{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4c0906993ddd7f8d5a663604ef706e16a19873d97d7a7469a07f4fd196c022dc",
    "signature": "0x420e054ee0ceade7ffb8e801a3dc78c789bac52fea0c7695ae41a371844c44cd68c556a732e64733aebae77460e54c1ad93d9fdaa23dd1800347d9f611253e821b",
    "signer": "0x7D2D5E27408F0668C81f4557c3fAF6Da24559eFa",
    "userId": "862553405"
  }
}