{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xe3b8789bdfab2f47e4c71f141b41b38453e1fd8dbb29063337b9c5504f862f66",
    "signature": "0x0e5dd241c26a8c46f26fd68624a6eecc9380bd144e8155b658b88617c4b07c540ea788e4dd475751f329fe9f6d11930c612b2ef5bdc104826bcfeea979d44b1f1c",
    "signer": "0xa228dA0794005c958cFc691a6808417E21E60Aea",
    "userId": "151623966"
  }
}