{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "194818",
    "entityType": "User",
    "nonce": "0x1239e5e6d3424db975f98940fda7acc3b7b27183743aa0126ea581c92a48738a",
    "signature": "0x92b043bfc1d7e7cd1722967c068fa1034d8363ea1b12f07a665c2e70d09a0a6e53892b9ae5361e1464fda64fbbaffc1fd22e4036ad34dd02d1b5bfd6ae5e38b11c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}