{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb498b11195f7e757789e0ba69d0ddad83deb8ac3be5ed3ef72b30419d394c49f",
    "signature": "0x454228f94de0987e6159b19e95d5542b476696ff73ec611ebf4f71ee8b99369b46e8cb31348ce58d4fda40d2bc7c31ea4307fd23435ab70ea13c4c93f2c2127f1c",
    "signer": "0x54B67bca93C518f6faF3fc07161a07BbFB9C8130",
    "userId": "972435259"
  }
}