{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8ffb094a031073e2d40c748d2058c0e10b25564b9b1486096509d24a02d8de17",
    "signature": "0x51ab21084c1bc2418ba06a165fed26086df88a27810e41a82c3133ef4b1910b72320605bd96ada6ace34902013a9fd4072b8f6aa4279880225e22d56a87e838c1b",
    "signer": "0x10E0e670A42D8bE304eF542001D0446FB578a97d",
    "userId": "932970659"
  }
}