{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367750",
    "entityType": "User",
    "nonce": "0x66dc99e6797d0d3d487efbd8e2cc39112ad562f8ad36bee9325b88e6eb068109",
    "signature": "0x7577573c80ac72e955a7684c56ba5f73d9cd61bcef9d1cd6699bd390c5244b4e38136e14067e203844f7b42cb92a8f0f324f10bb1f0ace9a8fcb3e50a6a9f2d91c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}