{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9974ae02f907106f6d1d827693ae39aee5dd832b74260245ea49dbe86ebea7c8",
    "signature": "0x12c5d93c240815a0715e2d2e1fe70b5b5837c89b41031aef0745327a186a258254497bd407456d12bef1d9b4071b1350e678d6884dd564c92475013a9572d8a31c",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}