{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499136071",
    "entityType": "User",
    "nonce": "0xb5f7542d1c5193c564100223822a1b50d9d77bfb448423593d861d3dbb194f42",
    "signature": "0xb4e7a462bb087342aca17e9427207b00528d603f5596340b401e09b6602d12f02212ce05f1a37ab5174449e12dc9812efb0d034e11f45e10bcb7d449c57f51c61b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}