{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "601241019",
    "entityType": "User",
    "nonce": "0x253ebfca148bdb03a541a5d5e46bcd7441f058a0845f449f296c2a82bf511cc8",
    "signature": "0x9a3929cc7cc7e61e26915ca9c8606369f0464a204f46ad20ef9249a2f024deef62343f3df29a1c4c440c8ef83e429a4763aa6a5d3b7a3e31cd4b9ab6ae418bd71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}