{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xd13ba7f80abca4bb064a25b7703f9b1006e28629a88776f81a3433a5e23d6554",
    "signature": "0x0dfbd9d6b285686a34c0d918cc8795351a67a0c89c137205d7383801327b5b4352524553f32dd46ef63c009371672d99e50a014b0aab17fae9d64cedfcb04d571c",
    "signer": "0x7e4a5037718B9Ae6Ee00dc6C5dcEBd04e956C023",
    "userId": "724340890"
  }
}