{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "891901255",
    "entityType": "User",
    "nonce": "0x543dd2f453ffcc5e2a19a6910a4b0163011f78280f61b4b13e486f50cd276e54",
    "signature": "0x9ee82b7c2eefef66111752837a41903a2796a3c80b1fc68e2647d3c4b79ba27d070a439d587ded61b15709c940b4daf976c900af31dece7bc68ad9b2e94cc4271c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}