{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x5d7d89e01a3fa3955df5cff53aed624451ba558f783775c6bdf3bc6b6fb62a7c",
    "signature": "0x0ffe1a887b377f35d5ddd804f71c721b857fe05fd4560c316c7cb732010099a90350ea36321c35ef28f86e9fe4c118b036515ce094b3937ef033bb1cb9de558f1b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}