{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7f90abc868b0bf8fc30620f6c1057f417645769c49164a917f9296233145fd86",
    "signature": "0xe0a294df6e1badf83b4ee3a718481a39418aa8e813bee5ad90ff2783d02064b14da2ee9012f01afc6a2d692d7bfad75ac106c8173e448589c82e49d6ae107b8e1b",
    "signer": "0xBc56EAd02D07b47F8E756B8Adad83fcB7253240A",
    "userId": "203745939"
  }
}