{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "694752224",
    "entityType": "User",
    "nonce": "0x3fc7b24e490f7b6f179e13391fab98d9d05ef2a03fd1fa976213f34e576d3c91",
    "signature": "0x2c0a3ca79408063a128d4681e0b26b99705194c8b9bbe60c1aeeeb26af07e64a4c94aa623f4f084f9428dfd23087d0506a48bca6c7613594d716413fe63dbcbd1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}