{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "99409",
    "entityType": "User",
    "nonce": "0xe3df840032d6170e5a799ca0cfdb655de40ee12ef48c8e4ef1d047e95e14be84",
    "signature": "0xd09e9a7d6953b4134254f2403439581fd9f4baf726ef182e390e8886536999845e114738f58a11b833ad6053b24b007a554fa2dbe2315e2062510ce89c61d9791c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}