{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105821",
    "entityType": "User",
    "nonce": "0x8f4c80ab8217deb42f37bb5de41fe477f2a8578b48efd993c441813ea93bf2e7",
    "signature": "0xda952e021fa01446386f5a5d507414a49b8adb88b7177f8d660611ab789e497e26344171cf151f688bee7da764acd1d2afb9dfb7efd0c0519022ca07d68c2dc21c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}