{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "573321843",
    "entityType": "User",
    "nonce": "0x968c60b12dc73b4977ca95a8d78872d4f82e81ae1b07a7f023ab3df4f6413577",
    "signature": "0x6bba52235b1514a3533b0edca90462dfae59eaeb3f2ab4573ba3c1e0b3e1b97210fe50f2c3393fcf798c838bf037a413df9565f6da509ef56a141df92769cf7b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}