{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "371438",
    "entityType": "User",
    "nonce": "0x6591d077a065b15d56e029b07fba82981a855d11329c0624021fd5e09e8ffa54",
    "signature": "0xf172fc37737e5902a5637ee000da4556bad41458f6840eac419cfff06e23c5fc6f8016ae85975d3ebc34a287160df7448258df2685e38d13f736ac4f9ddeed761c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}