{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9adfdec048774374fde79de8338830981577c3707c689f65398a91423562f2f1",
    "signature": "0xdb88d4a532c29daa7e017aa722ed126e7bfcb3f596b6950582465a48ea1225c61ecfafb63b2da6734bad5c291cfa2efe1a0cfe338ecaee76248094c793d297211c",
    "signer": "0xFD6ddCA27efe22c864359B250a6517CE5EeC3996",
    "userId": "590062714"
  }
}