{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x864f0c8d09feb952261b05ae291dd4a331bc0b0094050ce350d64f8ab377398d",
    "signature": "0x9dfaf641fad8dded49cca23f262a63c3fd49fcd40e9c478a57fac11aff7eccc531d164d3acdc92adc7a4cce2e2ef26b9dbc3b2de87a4db3ffdaecb81300959551b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}