{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "199835",
    "entityType": "User",
    "nonce": "0x6630dc72f80a81e48b29c9a4438d434c0ca2e5031cf758305de9dba2eb968563",
    "signature": "0xa5b658632c914cbe2b70cab1d2fad8bde63ee37d3251853f6f94f38e546c0d764ea03291d83e6e49c7df0043e5646e9f7a16eb101dd2c3338cea05e7d7ea9ad71b",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}