{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd0e608e3ce233dc1b221084897001cb92cb53d654dc1d8c302b9132f11c7a0bd",
    "signature": "0x5d73780545e6ad1ac1fbde660ce83721fba83973a93375d433a85507a75996715a32428603b9f27acf35425db24835e82a4c944887175d06ea759dc6807b2bb21c",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}