{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73459",
    "entityType": "User",
    "nonce": "0x35a5a9ea3cbbda9fb22ebdb54d49ea452ce72f91a966ddcecbd0eea3da84a329",
    "signature": "0xf740b153d9f93be9909ff88d63765bd585e0f791cc60eddc76aa4b041060a08d07a07a21790d35a7d2cc428ea717bfa3edd3a50023375c8bbd7688142cd4c2c11b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}