{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6583477e7b88f99b27c64ae442136738d11acf2cf9f59f4ad6ef5f85ff8d0780",
    "signature": "0x3e852b9e1e681b7fcf54ebc409fea68925161f20f993b7f4f32e139fb11af7e87b47fd8191f505ecac1d56a1317fe0584a819841d0fb9ce33390deea889bd6c71c",
    "signer": "0x6598d2b74ABF4B93C1f39224c710Bfe47e4F8D5c",
    "userId": "877166538"
  }
}