{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x508eaa15444e7f2818c8d20a1797b8d16e1ba4fd66e902bdc6fdc9f0770e657d",
    "signature": "0x653ce66d4d464e8e537c88e417cea71f2422fcf98a448d5ab572c4e3c69a9efb160eab94a2407db1596c048627995ddbd496d9b7b5d0b4354f10d3b605d853f61b",
    "signer": "0x858Be7885D181415aF81b736714608bbff4936d2",
    "userId": "357460890"
  }
}