{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x65171c4d92c4c5b015ca296fd1b823d6a1923426f46570705ea0f578cac7246f",
    "signature": "0xe42b04eead8acc5cdac742eef992c005ca683b18e2521bfd11aaabc5cf9a3042625555e3289aeeab5eff7908f3b8c64d9a0b36bdb87a5e94e37348c5d22f481e1b",
    "signer": "0x1F687f4cF65B79aA3Cd13010c8B90C4eab460A5f",
    "userId": "45150338"
  }
}