{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x42315360ba24fdd339ae795c622f63f969ee54ff363b6e14f00c9a5c9cdb1812",
    "signature": "0x66489e63bfcd76c296d2435ea3f8be481e939d78271f0ea8327c6fb0589170951174df24ba3636cfbd0cd139dcb5ef032d19705754c587b61e80995dc6cce4c41c",
    "signer": "0x8493eB5E11cf6A8721550b1FE686220839817B51",
    "userId": "759225695"
  }
}