{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "512354652",
    "entityType": "User",
    "nonce": "0x856b10bf179a81293faaf429a6612774cab6ce7109bf6d5c4cfaeb6e98445e1e",
    "signature": "0xaa01ab33a5aec07193ef5a4f5dd99b515d365b9bde1e928257f4130fab2a9d031919611ad70256986f5da9c3c1f597d6bf2b7b40bfa953b1d71c12c3c9cd896f1c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}