{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "517504222",
    "entityType": "User",
    "nonce": "0x4acdedb1904341a6d620b3278d6ed4dc32ee0cb9c6f54b7283e254ca4dfb62b3",
    "signature": "0xc9016750e423b3ebf243ed647be145709bcd51ca44e381af239040da84a615a11a71b2ba23435938aaf2f2088e71e6b12cfc0d7210eb818e598f408e6dd58d191c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}