{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50198",
    "entityType": "User",
    "nonce": "0xa3a9710a2e0406d8019edbaf818bfa0f813ea64854ba417c94fd62ae6da47fec",
    "signature": "0xfac854e40eb976c94c42da7177bf9a2629461656becb6fa4e63323b030ee41113efe2060779aaf405bc730e5ab11c3eed6b27ae497e5831b06f34dde84a3615a1b",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}