{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75322",
    "entityType": "User",
    "nonce": "0xf78a741fd7255b9a464fa8c80bfa2b3644627a5aadd4247a3eab999a36ecaaf6",
    "signature": "0xe0efd4b61beefb11fa85ac220e7c4adb48fe7b92767f08af4aa64ac27ae8fcdd289ca48d6e9872a880f3500205da0da0e5aaaabf12395f834555524722a9bc711b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}