{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140518",
    "entityType": "User",
    "nonce": "0x01e3b49aeff735defa7bedd2188ca8bc993ff13558ac49cf6f9cb3975366dbd8",
    "signature": "0x3aa10d31bb7718dc0fac419dbfc7ff94777d26d12fd4afe5166c3690c71a71ff0a155c31e36c9879d42248711aa2b65d4d442b26c8f9cbd3add5ca3ae2ce24ed1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}