{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1477402",
    "entityType": "User",
    "nonce": "0xfcc2bf8b8489c66f1e880fa0b22b8eba33a1adeef604d343ba44d84e1b60f7be",
    "signature": "0x78795c5dab08a83e1096a5456daacae1e46d8f4fdecbdb7610322de90988099d04379275a5bab725d2d2072ee3b617084e9aa33e178cc46c25c179cf016478331c",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}