{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311591173",
    "entityType": "User",
    "nonce": "0xe20e64625c887907f2a8a8a6a86e56fe43c96d1a30ef8f2fb776c9473f191148",
    "signature": "0xde9b87c899f9af1cf59063ea6e1a186c10095fa249e235d54d943a7af31b42d55cffe3b80a9564073a7d987435419b2c6495e72ac4c70275c1cee9c077e3105a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}