{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10209",
    "entityType": "User",
    "nonce": "0xa12ed3e771b6058655be8d7b8c78b8631b2e22a20340ce2bbd23a98e2484dd77",
    "signature": "0x1248e3b41f7537bc14915020f7d1ebb1de0318c60f234beaae43cd00c1a7af6d77018c01dee917129671f567ec5997ee57f1e3c7dff1b10e639f51ca3301f2061c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}