{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "322258",
    "entityType": "User",
    "nonce": "0x8729fbbf1fd942273221470948929006748ab39c816de4b804fb19390748bcfe",
    "signature": "0x741086b4b17ccb39172c0502cde5253147993da6a66d7d6916492ed5f1316c8e26fd272e0173e44974c5d71c3167a90be2bcf6c697e321536ca3757223124ab81b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}