{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc04238033390fbeb346bc3680dfc6fd155ddb4e34a9687d9d35a232a70d42bdd",
    "signature": "0x51f0dd321f3581e5d138255c0f2b7b3edb5fe8b590ef0812099c8fb3da7c397677b92be27fb31148e1a467fc104dbb51f9d284072f43cdc61f89aea554bace791c",
    "signer": "0x9E3cAd031424c3F3AC5315ae9eCE9dDD245d5423",
    "userId": "98441285"
  }
}