{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0x890dd0bb39dad4817d9a9a10ca6cd0ff05ffb83fbb950f57e6972d5df8dae0ec",
    "signature": "0xfdca4470b243c6396ea684cea5944ddc7e7c13bcc660b8fde98206570ed32f4e7d9d1c04e4559571a2cb759f548784f803fcabbcc780b705a70201e54a86f0421c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}