{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7ed3e83f0d798cc1eac26f494e51b616084165f26f5caa2e674748292d842d67",
    "signature": "0xff15a475261d176b3f2ee9229005c1d286007858cd992dcc3d10d7f6ada7188d5da5001527c0912058871e1e5fd6abc8ab9e524b7609a4ce2c56f070c85658a11b",
    "signer": "0x71a9EdA142ADcec6D9D99C42195f3eCD878bA853",
    "userId": "165550147"
  }
}