{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313074",
    "entityType": "User",
    "nonce": "0x2709d0a8422437d95a5a44a56be2a3f56bad9ccd03a06f479c715d666134fb13",
    "signature": "0xe5cb2348493585af57a71a42dcf78bba03427ce290ac357d98b83b4f94d962be2315c5f09cbe48b3c70f4d4bd01ea948aa942b1bace565ab4de00367de9857ce1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}