{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xca4c4eba18c91e98ff0f0999d42de15391b08613e3e158fc66b2492309d29c37",
    "signature": "0x2862828ea26f656453d77297dbc60128d3cff064f280c85254166b9d0210150d1190c083767b14cfa5f3228ae92c89d63fa4d52f148b61480e12ec9f1c2018271b",
    "signer": "0xE9178d3668972F05e461aB1Fb0cB86580D4d4a07",
    "userId": "313281122"
  }
}