{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x04c57a5b4f5fffb45a95fe5927ceacfaff074ffd4519040a877062946c017a21",
    "signature": "0x773f3d4f30e0c2e5c35a9ca312e7162a13bd20485aa9b508fa48973d3a6abd3c7d41697b628b58fc87729747d02efcebae7327eb8535acc51f54eb0d4a21b13d1c",
    "signer": "0xf6c9943016137F3054658e7E14F51B6d271aC325",
    "userId": "644767279"
  }
}