{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0xcd2531567deb71e51e0905a59217025fb9b56fe9ac78438f142748cf3be67b13",
    "signature": "0x28a6826e95fc7c4f0c4a27e33f2713039063d8ca915ba812c744b60249fd02c32021dee7f47e66a7850e1e5c0b5a36482b04bcc32c789d5b47e277a27f91dfd41b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}