{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "208551",
    "entityType": "User",
    "nonce": "0x18f46889a0f42075271927bd5cb607aad53faa2f95538f02969d02a8b73eb47f",
    "signature": "0xcaaff20884f915e8ccfe346b4755223ebc260fd6455478339eb30acdf8e54c73246d233659277a94d4a533463b16071ed15a8f5c3aa0155aa8e5d5433cd48ff61c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}