{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343301",
    "entityType": "User",
    "nonce": "0x41e4ca54282d537808bbbb40c70dee25c7a6ed9ade5ae9124137976ed1163cc4",
    "signature": "0x1e2669fbc06b8e9964f61bdad657a6e95dac4c07bad257f4f86e5501664dff94175a0d7cd80fda0ae60202fd1c694fe75aae62ff8b305055fe38873d2c581f5e1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}