{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "467213409",
    "entityType": "User",
    "nonce": "0x71cd08d5dcfc7774e7d62df5020e91c0bac9bc30c85e4019af79870907479bbe",
    "signature": "0x47d6b4742328f9937a9b96b3508d88e0d864393367a607cfcea0719c48a82610739967bdc0a854dd60c9bb9627b3aaabda2c5e00f9ba6a5e958a678c0e5a0c951c",
    "signer": "0x721f076D6fdC57634d612324093cA69B47866867",
    "userId": "303348966"
  }
}