{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8898",
    "entityType": "User",
    "nonce": "0x7194162b36edc3f3b0d94c7f4b72074595483f7520aea0bd361228517dc37745",
    "signature": "0xcc11a0b1577a35a461add5bf890e4b3b095e7e6a0310d1e72c4e1456038023393463fb5446b2e03b2626968bdbd81bd3ac70db57f12a4a7c11c7a2dbe805dc121b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}