{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21676",
    "entityType": "User",
    "nonce": "0x9bdaf2ce7df3e87abfe266b1aa4e4b2e10c5f76d4f5f6bd60cf68ac027c1dcc3",
    "signature": "0xde2e96a8231831f501a8f48b47c16182df67d87a36d299a720440f9f5d6a03cf73ca0bd73d46ac5e2efbfd0ded38b12cc8ba1bcb7057295c598d7e7c64c27aa41c",
    "signer": "0x8eEbaC0c8b926729F8Dc288872A07cc9d08d8d8c",
    "userId": "42402405"
  }
}