{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428991",
    "entityType": "User",
    "nonce": "0xd7aa37edc4661191fba6d32f9b52c885d3c5ef3cae09b97242f05ab349c9aac4",
    "signature": "0xf5456c8692b4f8d1aeb934c0ef11218c3dbef3c095927c2bc61a2eb54e4be2102c96f54171190265929617ecc73c0fbe927d017578eddcbbb164b02221b4736d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}