{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203753098",
    "entityType": "User",
    "nonce": "0x3594f7684f791c8a08d85f935aea756f412e75bad842a9fd3683dee0bb6a4047",
    "signature": "0x1fafde985d56c6866d972aa7a1cb4b9501fc6ccb518c81c837986e585d28b973318f8d523df6e1a422df0cef5dee03a7b0d19cc27242ec705bd31bff42f2f6351b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}