{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "715633189",
    "entityType": "User",
    "nonce": "0xd74ebb17d34ea089f6a27f3c7fa442fb1e3237b5f9bb9c9f58f5bd1b5546cead",
    "signature": "0x47831c8e7689a7396d07ed4ea8ba0a1e8353d37518481dd5d009d8c05cdea6a77e71aee2a656a7f3a4c935e64e00dbb710d999f1ad6db44d6f68334d0ce709651c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}