{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "297345",
    "entityType": "User",
    "nonce": "0x13777922ee4c54ef7ab8bab637c1fc1f6dedfb42d809c752c0afdcaa9158b382",
    "signature": "0x436ab0916b6356d80075dd2f312ccbeef221d60c63ff9284c1a1c2624409ff6f133479c9c9b39b273240f07d13a6bbe3a652417232fef2d850be5459eb3e37791c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}