{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "439459472",
    "entityType": "User",
    "nonce": "0xfc0cbc6ba5b2ed6de5d2210a769bbc808a4025febcd2831e02cf332f59dcdca5",
    "signature": "0x44c3832dd00dfc9ee1774389d180250fd62dfe78a32402bf6a25b621b420b1703bfdfd404b0e03d66cde3bed225f07ad0371ce33de901023cc6d95e04540773e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}