{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0x64e59a3c7fefa10e6d2d22842eedd9dc919d5b140c2bc7dfb505dd04501415de",
    "signature": "0x7b8ef0ec5041739a4b5a3e2f25f3fd3cc8ef969c5e016e79f95b6f9466d4480b73289f75ba3c9329ac24ee53048aeff34bd5d90764b4d1910c2384630b681aed1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}