{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "471045089",
    "entityType": "User",
    "nonce": "0x8cd4af5ff084344b3df3713791e17a443a3d2b393047a4e99859984f49d2ebac",
    "signature": "0xdc3335afb38f29813ec76d506551f72a44dfa2ae5c978729a494af81d3b48bef310d0d85b6e531d2f7f8950b9f4128d3124f9ad3f8d5d2d8e6edeb109a286e191b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}