{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb71dbf7e486e78f958a394e0fa525b89fa06741d4233610de108d046f6ac6065",
    "signature": "0x3fe1821b9efa4da650b792995b4f76aab9d1cb043b3ea415281afeee8289d913546605a2faa33846e4cda96c766f80ffd12eab9c0a1b77eaee07c9a4658e58811b",
    "signer": "0xE2b3D9De60dfbA3eD9c35e4Df8882FE476B1d093",
    "userId": "630604917"
  }
}