{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1495091",
    "entityType": "User",
    "nonce": "0xbf7cb6b7ef8c1b08775f6d9af59d3e6f7e640897951b95a0190a5ab4710f3e9b",
    "signature": "0xa9523fc353f5dd5271f2e810a3ca458989da4c641ff29ec484ccd72438f0df335bf0a7f883a3d432189bb857a5c28431222f867d9d8bc58aecf31af8c9adaa6e1c",
    "signer": "0x849ff9BA1AB2a3d37b1388f2b207aea59DACCaB6",
    "userId": "901768902"
  }
}