{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "310796",
    "entityType": "User",
    "nonce": "0xc8ae9db0cbf13de57c96f88bd24fca465af7dc51f4980a6614f1ebe26b62b37c",
    "signature": "0xc7db756fd9e5e8f038966c9c5b336a854f8949ec29a79babc55f132d7b5fdaa54acebba0c4bb014af4e775931e0ae71d5b0ca6936ec516ac87fe8fb2b9a3fed61c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}