{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16564",
    "entityType": "User",
    "nonce": "0xae61070f61d57882485e68a7faebb61ef1ab1fa1d40def14d6809d7a4ba3b0d4",
    "signature": "0xe4f57b0a1272703da369fdf4d80c69626fba1679a1053f5c5c957a31632c417510fe91db42a0006449b837a545a0457c24364d6e01754f83135a6740f871b5c21c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}