{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "522824",
    "entityType": "User",
    "nonce": "0x6f32a3ac8140750f024a886095ed2e4c1970ed3685f1dc334a3b02053e249c93",
    "signature": "0xcfb0e98efdec463d7325f82ff981fb9caf80e06862d75646e8620e9631a710bf5e2af7b1e7a3cfa241032f9fec8243c63683899701d1d0e21e5434b8962530cf1c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}