{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348321",
    "entityType": "User",
    "nonce": "0x60f55a00faa3c89c13ed40c7635935f4057210b4fa6d08df06e24b65c2824f0c",
    "signature": "0xa0b5de4fae73e3a910c9dbbcece2d73e7ed2a05373bb21715418f724b0aa98f01ba61b95a002ad4394e2183b42b8ded7e2ac4908aa42164641590ab7e23fe7771b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}