{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311257477",
    "entityType": "User",
    "nonce": "0x4c3a70d9e38e83bccbb8672d7e6c0caed24b947c46e60b25fb1f31f448d431bf",
    "signature": "0x450c1223e29c9f89a10fd83bfb51ed16355a0dc393f63796e15d68c748e6f90767e4d9bfaa72c59eeb22490f111cbe8c75bed4a5db2809bd409cf373c98454f51b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}