{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381760634",
    "entityType": "User",
    "nonce": "0x7c66423a13f63d283f0522ee438de79f2ba0ff0a199012211620212cdbf830dd",
    "signature": "0x5aac210f119331fd3db0b489f79e1c2b8adc62d6fd81928f5bf1c1c4e91d531d57aa0b160c20a791fb57e42c76c03a8a1e2f750c0d75f8f16832ab197b4a5a3f1b",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}