{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8e9dcfd9bc35d469b7fcd6e6b5fefbde81bab5164b615d7bf5bd384c1c6783bd",
    "signature": "0x8fc7755b941b02b4f69eba251f132584074f5a8b2ec92ee24604b76020f87f043b381022b74356b808a963cc81fdc8cd744d98c52e1a827723337e22276f66e51b",
    "signer": "0x4f23AA5962952Aaa54c61cAd319F3Be680F92916",
    "userId": "482758325"
  }
}