{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53911",
    "entityType": "User",
    "nonce": "0x7fca6ce7746a66a35946301655fff3c0c861d51fdaf6a151c5cf1d9cdce6b272",
    "signature": "0xf903ed7fca958045a6769c4c618d5ada2bd6b6588152d83b61ba8425e834865201d3e509d8562a3b6f5b3cd45715703f3ad83fcbf59d982d1e741a47b868ea1c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}