{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x22593041e9bce951388239495ade9162e4739d1a076fc3c52d7ed9d0af4685b3",
    "signature": "0x698127886934030d54956f22a9dee0d3f64088060dda723ca6e4b8eaa3ae62504d2625c097961b0be6e1dce903a8c92d85e12e493c985695b038f98ec7e19c191c",
    "signer": "0x42Ddb76B7bF27595dbfEa5700019c997432280Fe",
    "userId": "481565189"
  }
}