{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353549514",
    "entityType": "User",
    "nonce": "0xc1713a6a436d6ad33719d9dbe5792de15e3eea23346bd222253fa34a3d03da80",
    "signature": "0x91f60ecec141199f286c2513c797d0c3a0c31adb3f8d9611320a427711979c3f19d9a3d464cf45bb89db0ca7316ad925a6ee5d20261453fb50634457a48d91a71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}