{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18103630",
    "entityType": "User",
    "nonce": "0xc61bf43a28645f627f9bba9ac8349d2e4705ddc632d625fb959c31d71dc1a490",
    "signature": "0x859d1c398e65afc0242378d8ae66f920f656e6e52db2c2a2acbda7e57ddc13602e7333ef853bac6ac120dc534efa17b2f87bc8b15baa605bc2b65bf11c70725a1b",
    "signer": "0x488e8Cc0aa4A4A170544982D50B2616e42ca6c67",
    "userId": "386938284"
  }
}