{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1ef19b4b5e5bc61d46a87f2554f987fb5ee6fa32f5bc79e7e9666502db09f012",
    "signature": "0x833ff32e41bbbbdd04e5a71f22caca49cab31546f00a56d83d75d64f41ac52376cd77bbaaea48c942664b4217200e86d21b7b2a872f0d63861cb28e2bd5dbabd1b",
    "signer": "0xcE1000874CF7A0a7b16c35A55F7D6f10C607A868",
    "userId": "442277469"
  }
}