{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x29fd761f446f9159c42c06a94242cc580cb4587c818599d913c8c5f562be6e3f",
    "signature": "0x0d28e03c2221cdec57283681dbfe877e59fba32e98f78efbe46cebb06ff1c2f553845d50bf43f1d9cba7d3a3fd584bd8a680ca7a5f70ad735f326bf5b07290591c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}