{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122526",
    "entityType": "User",
    "nonce": "0x2721bdfdfb3887e227894cee0a8ab74cbbfdb9be24c09d100fa30f13481d660c",
    "signature": "0x79ab3ea406e5914a9192a3d9885faca9ed1d8c2be5e28e3c2292bb7c99f6cd9d111a64ac7ac9ae80b04664836059c6daa4d589db9c6d6dae989a5b98f846317c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}