{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "582447217",
    "entityType": "User",
    "nonce": "0x178564b61f6ca1552f150bcd5f4ace50c75f8026f2c7714a70e9f1050483c4c5",
    "signature": "0x722b4b846228af20ed152f3ec915ce43ee0df291db06e8d33cfffcc17d1d87e71d961afc8260fcc84b12e94859c2c5be7cce73941a2e25273dae1896373025201b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}